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3 years ago

Ahh please help!! (•☆•)♡♡♡aa please help me like it would mean the world

Mathematics

2 answers:

fenix001 [56]3 years ago

8 0

Answer:

sorry i don't know this

Step-by-step explanation:

But good luck

insens350 [35]3 years ago

7 0

Search the questions up

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4.) What is the exact value of sinθ when θ lies in Quadrant II and cosθ=−513

dimaraw [331]

Answer:

Part 4) $sin(\theta)=\frac{12}{13}$

Part 10) The angle of elevation is $40.36\°$

Part 11) The angle of depression is $78.61\°$

Part 12) $arcsin(0.5)=30\°$ or $arcsin(0.5)=150\°$

Part 13) $-45\°$ or $225\°$

Step-by-step explanation:

Part 4) we have that

$cos(\theta)=-\frac{5}{13}$

The angle theta lies in Quadrant II

The sine of angle theta is positive

Remember that

$sin^{2}(\theta)+ cos^{2}(\theta)=1$

substitute the given value

$sin^{2}(\theta)+(-\frac{5}{13})^{2}=1$

$sin^{2}(\theta)+(\frac{25}{169})=1$

$sin^{2}(\theta)=1-(\frac{25}{169})$

$sin^{2}(\theta)=(\frac{144}{169})$

$sin(\theta)=\frac{12}{13}$

Part 10)

Let

$\theta$ ----> angle of elevation

we know that

$tan(\theta)=\frac{85}{100}$ ----> opposite side angle theta divided by adjacent side angle theta

$\theta=arctan(\frac{85}{100})=40.36\°$

Part 11)

Let

$\theta$ ----> angle of depression

we know that

$sin(\theta)=\frac{5,389-2,405}{3,044}$ ----> opposite side angle theta divided by hypotenuse

$sin(\theta)=\frac{2,984}{3,044}$

$\theta=arcsin(\frac{2,984}{3,044})=78.61\°$

Part 12) What is the exact value of arcsin(0.5)?

Remember that

$sin(30\°)=0.5$

therefore

$arcsin(0.5)$ -----> has two solutions

$arcsin(0.5)=30\°$ ----> I Quadrant

$arcsin(0.5)=180\°-30\°=150\°$ ----> II Quadrant

Part 13) What is the exact value of $arcsin(-\frac{\sqrt{2}}{2})$

The sine is negative

The angle lies in Quadrant III or Quadrant IV

Remember that

$sin(45\°)=\frac{\sqrt{2}}{2}$

therefore

$arcsin(-\frac{\sqrt{2}}{2})$ ----> has two solutions

$arcsin(-\frac{\sqrt{2}}{2})=-45\°$ ----> IV Quadrant

$arcsin(-\frac{\sqrt{2}}{2})=180\°+45\°=225\°$ ----> III Quadrant

5 0

3 years ago

If the side lengths of a polygon are: 4x, 6x, 12, and 18 what is the value of x if the perimeter is 118?

Sonja [21]

The value of x for given polynomial is 8.8.

<h3>What is Polygon?</h3>

The definition of a polygon is given as a closed two-dimensional figure with three or more straight lines.

Here, the length of sides of given Polygon are:

4x, 6x, 12, 18

Perimeter of polygon = 118 units.

We know that,

Perimeter of polygon = Sum of all sides

118 = 4x + 6x + 12 + 18

118 = 10x + 30

118 - 30 = 10x

10x = 88

x = 88/10

x = 8.8

Thus, the value of x for given polygon is 8.8.

Learn more about Polygon from:

brainly.com/question/17756657

#SPJ1

8 0

2 years ago

PLEASE HELP ITS FOR A TEST!!

Mashutka [201]

Answer:

22.5

Step-by-step explanation:

multiply 5 x 7 and add half of 5.

multiply 3 x 7 and add half of 3.

width is 22.5

6 0

3 years ago

Read 2 more answers

Fundamental Counting Principle (L1)

Gala2k [10]

9 and 14 are the answers

5 0

3 years ago

It costs 3 tickets to play a game at the fair. If you spent 21 tickets on the game, which equation could you use to solve for th

Reika [66]

Answer:

3×g=21

..............

4 0

2 years ago

Ahh please help!! (•☆•)♡♡♡aa please help me like it would mean the world​

Ahh please help!! (•☆•)♡♡♡aa please help me like it would mean the world