What is trigonometry and where is it used?​

Answers

Answer 1

Answer:

Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. Trigonometry developed from a need to compute angles and distances in such fields as astronomy, mapmaking, surveying, and artillery range finding.


Related Questions

If there are 20 lollipops and 40 candy bars for a gift bag, fill out all of the possible ratios of lollipops to candy bars that could be made

Answers

Answer:

20:40

Step-by-step explanation:

The required ratio of lollipops to candy bars is 1:2.

Given that,
There are 20 lollipops and 40 candy bars for a gift bag, fill out all of the possible ratios of lollipops to candy bars that could be made is to be determined.

What is the Ratio?

The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.

Here,
Total number of lollipops = 20, in a bag

Total number of candy bars = 40, in a bag

The ratio of lollipops to a candy bar in a bag,
Ratio = number of lollipops/number of candy bars
Ratio = 20 / 40
Ratio = 1 / 2
Ratio = 1:2

Thus, the required ratio of lollipops to candy bars is 1:2.

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Rewrite −2sin(x)+4cos(x) as A sin(x+ϕ). What is the value of A and ϕ?

Answers

Expand the target expression:

A sin(x + ϕ) = A (sin(x) cos(ϕ) + cos(x) sin(ϕ)) = -2 sin(x) + 4 cos(x)

Then we have

A cos(ϕ) = -2

A sin(ϕ) = 4

Recall that sin²(x) + cos²(x) = 1 for all x. Then

(A cos(ϕ))² + (A sin(ϕ))² = (-2)² + 4²

A² (cos²(ϕ) + sin²(ϕ)) = 4 + 16

A² = 20

A = √20 = 2√5

Also recall that tan(x) = sin(x)/cos(x) by definition. Then

(A sin(ϕ)) / (A cos(ϕ)) = 4 / (-2)

tan(ϕ) = -2

ϕ = arctan(-2) = -arctan(2)

image below i will give branliest

Answers

3,7 is the correct answer

Answer:

3,7 is correct like the other person said

Use the series definition of sin to express sin (x4) as a power series centered at the origin. Explain why the power series converges for all real numbers.

Answers

Recall that

[tex]\sin(x) = \displaystyle \sum_{n=0}^\infty (-1)^n \frac{x^{2n+1}}{(2n+1)!}[/tex]

which converges for all real x. (One can show this with the ratio test, for instance.)

Then

[tex]\sin\left(x^4\right) = \displaystyle \sum_{n=0}^\infty (-1)^n \frac{\left(x^4\right)^{2n+1}}{(2n+1)!} = \boxed{\sum_{n=0}^\infty (-1)^n \frac{x^{8n+4}}{(2n+1)!}}[/tex]

By the ratio test,

[tex]\displaystyle \lim_{n\to\infty} \left|\frac{(-1)^{n+1} x^{8(n+1)+4}}{(2(n+1)+1)!} \times \frac{(2n+1)!}{(-1)^n x^{8n+4}}\right| \\\\ = x^8 \lim_{n\to\infty} \frac{(2n+1)!}{(2n+3)!} \\\\ = x^8 \lim_{n\to\infty} \frac1{(2n+3)(2n+2)} = 0[/tex]

i dont know how to do this i need help quickly

Answers

[tex]\dfrac{cd^4}{c^2 d^8}\\\\=c^{1-2} \cdot d^{4-8}\\\\=c^{-1} \cdot d^{-4}\\\\=\dfrac 1{c d^4}[/tex]

[tex]\text{Hence the answer is C.}[/tex]

Can someone help me quick please ?

Answers

Let's look at the answer choices to see what the questions wants us to do with the data

 ⇒ essentially they compare Carol's mean or median to herself or to

 Anna's mean or media

    ⇒ therefore we should calculate Carol's mean, median and Anna's

    mean, median

Before we start calculating, let's define what is the mean and median

Mean: it is basically the average which is the sum of all numbers in the set divided by the number of numbers in that setMedian: it is the middle number of the set when the set is ordered from lowest to highest

Let's calculate:

Carol's mean,median

         ⇒ Carol's data ordered: 20, 30, 45, 60, 70

               [tex]Mean = \frac{20+30+45+60+70}{5} = \frac{225}{5}=45\\ \\Median: 45[/tex]

Anna's mean, median

         ⇒ Anna's data ordered: 30, 35, 45, 60, 65

               [tex]Mean = \frac{30+ 35+ 45+ 60+ 65}{5} =\frac{235}{5} =47\\\\Median: 45\\[/tex]

Now using the data, let's compare:

first choice: Carol's mean is equal to her median--> correct

second choice: Carol's mean is not greater than Anna's mean--> incorrect

third choice: Anna's median isnot greater than her mean --> incorrect

fourth choice: Anna's mean is not equal to Carol's mean --> incorrect

Hope that helps!

               

           

What is the area of this trapezoid?

Answers

27x4=108 that is your answer

The answer I got was 88.

Steps: I multiplied 17 by 4 to get 68. Then times 5 by 4 then divided by 2 because it's a triangle then got 10. Do that again for other side and add them together to get 88.

Sam was voted secretary of the Village Creek Student Council. One of his responsibilities is to track how many students attend each meeting.

Answers

Answer:

all are correct of not then the first two are the answers

All of them are correct

35%of?=242
options are:
a)729
b) 652
c) 693
d) 759
e) none of these
with explaination​

Answers

35% * 100 = 0.35

0.35 * x = 242

Solve for x

242/ 0.35 = 691.42

I guess e) none of these

Answer:

e) none of these

Step-by-step explanation:

35% of 242 would be 84.7%

We know this because we simply have to solve it!

We solve it by doing:

(35/100)*242  

(35*242)/100

= 8470/100 = 84.7

We need to determine 35% of 242 now and the procedure explaining it as such

Step 1: In the given case Output Value is 242.

Step 2: Let us consider the unknown value as x.

Step 3: Consider the output value of 242 = 100%.

Step 4: In the Same way, x = 35%.

Step 5: On dividing the pair of simple equations we got the equation as under

242 = 100% (1).

x = 35% (2).

(242%)/(x%) = 100/35

Step 6: Reciprocal of both the sides results in the following equation

x%/242% = 35/100

Step 7: Simplifying the above obtained equation further will tell what is 35% of 242

x = 84.7%

Therefore, 35% of 242 is 84.77

An item is regularly priced at $70. It is on sale for 20% off the regular price. How much (in dollars) is discounted from the regular price?

Answers

Answer:

14 is the discount

56 is discounted price.

Write the domain and range of the graph below…

Answers

Answer:

Range:-4 is less then Y is less then 9. Domain: -5 is less then x is less then 4

Step-by-step explanation:

Look at where the lines end. That will help you find where the domain and ranges are.

Make W subject of the formula​

Answers

Step-by-step explanation:

I hope this is ur required answer

Pls do tell anything in comments regarding any doubt

Lillian just got hired for a new job and will make $34,000 in her first year. Lillian

was told that she can expect to get raises of $3,500 every year going forward. How

much money in salary would Lillian make in her 20th year working at this job?

Answers

Answer: $104,000

Step-by-step explanation:

34,000+20x(3500)

34,000+70,000

Which expression is equivalent to rootindex 3 startroot startfraction 10 x superscript 5 baseline over 54 x superscript 8 baseline endfraction endroot? assume x not-equals 0.

Answers

The equivalent expression of the given expression (10^5 / 54x^8)^1/3 would be equal to 5^(1/3) / 3x.

What is a fraction?

A fraction represents a part of a number or any number of equal parts.

The expression is given as

[tex](10x^5 / 54x^8)^{1/3}\\\\(5 / 27x^3)^{1/3}\\\\5^{1/3}/ (27x^3)^{1/3}\\\\5^{1/3} / 3x[/tex]

This is the simplest form of expression.

Thus, the equivalent expression is 5^(1/3) / 3x.

Learn more about fractions;

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Answer:

D

i did the test

Compare the difference between an independent event and a dependent event.

Answers

⚠ANSWER⚠

Dependent event is when two events are dependent events, one event influences the probability of another event whereas independent event has no effect on the probability of another event occurring.

DEPENDENT EVENT

When two events are dependent events, one event influences the probability of another event. A dependent event is an event that relies on another event to happen first. Dependent events in probability are no different from dependent events in real life. If you want to attend a concert, it might depend on whether you get overtime at work. if you want to visit family out of the country next month, it depends on whether or not you can get a passport in time. More formally, we say that when two events are dependent, the occurrence of one event influences the probability of another event.

Simple examples of dependent events

Robbing a bank and going to jail.Not paying your power bill on time and having your power cut off.Boarding a plane first and finding a good seat.Parking illegally and getting a parking ticket.

INDEPENDENT EVENT

An independent event is an event that has no connection to another event’s chances of happening (or not happening). In other words, the event has no effect on the probability of another event occurring. Independent events in probability are no different from independent events in real life. Where you work has no effect on what color car you drive. Buying a lottery ticket has no effect on having a child with blue eyes.

When two events are independent, one event does not influence the probability of another event.

Simple examples of independent events

Owning a dog and growing your own herb garden.Paying off your mortgage early and owning a Chevy Cavalier.Winning the lottery and running out of milk.Buying a lottery ticket and finding a penny on the floor.

...hope this helps...

12
Enter the correct answer in the box.
The graph of function g is created by applying these transformations to the parent tangent function:
• reflection over the x-axis
• horizontal stretch by a factor of 5
• vertical shift down 3 units

Answers

The transformed tangent function is:

g(x) = -5*tan(x) - 3

How to get the transformed function?

We start with tangent function:

f(x) = tan(x).

First, we reflect our function over the x-axis, so we just have a change of sign as:

g(x) = -f(x).

Then, a horizontal stretch of scale factor of 5.

g(x) = -5*f(x)

Finally, a shift down of 3 units, this is:

g(x) = -5*f(x) - 3 = -5*tan(x) - 3

This is the transformed function.

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Using an absolute-value inequality, describe the set of numbers whose distance from 4 is greater than 5 units. Draw a graph of this set on a number line. Finally, describe this set of numbers using inequalities without absolute value signs.

Answers

The solution to the absolute-value inequality is x > 9; and x < -1

What is an inequality?

An inequality is an expression that shows the nonequal comparison of two or more numbers and variables.

Let x represent the unknown number, hence:

|x - 4| > 5

(x - 4) > 5; and -(x - 4) > 5

x > 9; and x < -1

The solution to the absolute-value inequality is x > 9; and x < -1

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which line has no x-intercept
a. slanting line
b. horizontal line
c. vertical line
d. none of the choices

Answers

B) horizontal line

Ex: horizontal line crosses the y-axis, but not the x-axis

(16x2y5 ÷ 4xy2 + 28xy) • 2y2 =

Answers

Answer:

8xy³(2y²+7)

Step-by-step explanation:

[tex]( \frac{16 {x}^{2} \times 2 {y}^{5} }{4x {y}^{2} } + 28xy) \times 2 {y}^{2} \\ = (8x {y}^{3} + 28xy) \times 2 {y}^{2} \\ = (4xy(2 {y}^{2} + 7)) \times 2 {y}^{2} \\ = 8x {y}^{3} (2 {y}^{2} + 7)[/tex]

will give brainliest if right!!! pls helppp

Answers

Answer:

i think B is the answer

pls help im so confused

Answers

Step-by-step explanation:

I'm so sry! I'm working on the same thing.

1=7/10x
solve the equation

Answers

Answer:

I hope it's 1=7/10x because if so it's gonna be

Step-by-step explanation:

X = 10/7

Answer:

1=7/10x

1=0.7x

divide 0.7 on both sides

x=1.4285 = x=1.43


9
Select the correct answer.
What is the equation of the line that has a slope of 3 and goes through the point (-3,-5)?
O A. y= 3x + 4
OB. y= 3x - 14
OC. y= 3x-4
OD.y=3x + 12

Answers

Answer:

OB. y= 3x - 14

Step-by-step explanation:

I'm not good at explaining, but I'm right.

please help me thanks so much

Answers

Answer:

Vertically opposite angles

Answer:

B) Vertical angles (congruent)

Step-by-step explanation:

Hope this helps!

Students took an exam. Here are their grades. What is the class' mean grade? What
is the median grade?
(Round the average to the nearest whole number.)
65, 70, 70, 80, 80, 85, 85, 85, 90, 90, 100

Answers

Answer:

mean=81.81

median=85

Step-by-step explanation:

MEAN.

[tex] \frac{65 + 70 + 70 + 80 + 80 + 85 + 85 + 85 + 90 + 90 + 100}{11} [/tex]

[tex] = 81.81[/tex]

MEDIAN

Since it's already arranged in ascending order, the middle number is taken as the median

which is 85.

i hope this helps

Answer:

See below ↓↓

Step-by-step explanation:

Mean

Sum of grades / No. of grades65 + 70 + 70 + 80 + 80 + 85 + 85 + 85 + 90 + 90 + 100 / 10150 + 140 + 170 + 170 + 190 + 80 / 10500 + 320 + 80/ 11900/1181.81

Median

The middle number is the median as the set has an odd number of data85

May i please get some help

Answers

Answer:

Step-by-step explanation:

Finding the range is simple, just do 29-5 and you will get 24.

For the july one same applies 24-5=19

24-19 is 5 so It is 5  more than the range for July.

For the median, it is the middle data set meaning you will do 17-10 which is 7 meaning New years is 7 more than July.

Interquartile is For new years 12-17

The Interquartile range for July is 7-10 which means that is 5-3 which is 2 more of a range.

Sari is factoring the polynomial 2x2 5x 3. if one factor is (x 1), what is the other factor? 2x−3 2x 3 3x−2 3x 2

Answers

The other factor of the polynomial which Sari is factoring and found that the one factor of this equation is (x+1) is (2x+3).

What is a factor of polynomial?

The factor of a polynomial is the terms in linear form, which are, when multiplied together, give the original polynomial equation as a result.

The polynomial which Sari is factoring is,

[tex]2x^2 +5x+ 3[/tex]

One factor of this equation is

[tex](x +1)[/tex]

Factor the given polynomial using the split the middle term method,

[tex]2x^2 +5x+ 3\\2x^2 +2x+3x+ 3\\2x(x+1)+3(x+1)\\(x+1)(2x+3)[/tex]

Thus, the other factor of the polynomial which Sari is factoring and found that the one factor of this equation is (x+1) is (2x+3).

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The numbers of days 12 friends went camping during the summer are 6, 2, 0, 10, 3, 6, 6, 4, 12, 0, 6, and 2. Use the number line to identify the correct least value, first quartile, median, third quartile, and greatest value of the data.


Question 2
The range of the data is
.

Answers

Least value: 0
First Quartile: 2
Median: 4
Third Quartile: 6
Greatest Value: 12

Range of data: 12

Sophia wants to foster creativity in her organization. She finds an online training program that claims to teach people how to approach workplace challenges in a more creative way. Sophia is skeptical but decides to give it a try. She randomly selects 40 employees and randomly assigns half of them to complete the online training program (n

Answers

The type of test that will be required in the organization is a two samples test assuming unequal variance.

What is a hypothesis?

It should be noted that a hypothesis simply means a statement of expectation that will be tested by research.

From the complete question, the type of test that will be required in the organization is a two samples test assuming unequal variance. This is performed on the data of two random samples.

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Edmundo bought 4 trading cards yesterday. he bought some more trading cards today. now he has 12 trading cards. if n represents the number of trading cards Edmundo bought today, which equation is correct?

Answers

Answer:

4 + n = 12

Step-by-step explanation:

Given

Edmundo had 4 cards yesterdayHe has 12 cards todayn is the number of cards he bought

Solving

Cards (yesterday) + n = Cards (today)4 + n = 12
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