Question

(07.01 HC)Use the image below to answer the following question. Find the valueof sin x° and cos y°. What relationship do the ratios of sin xº and cos yºshare? (10 points)P

Answer 1

You can identify that the triangle given in the exercise is a Right triangle. Then, you can use these Trigonometric identities:

$\sin x\degree=\frac{opposite}{hypotenuse}$$\cos y\degree=\frac{opposite}{hypotenuse}$

You have to find the hypotenuse of this triangle. You can find it using the Pythagorean theorem:

$a^2=b^2+c^2$

Where "a" is the hypotenuse and "b" and "c" are the legs of the triangle.

You can set up that:

$\begin{gathered} b=12 \\ c=5 \end{gathered}$

Substituting values and solving for "a", you get:

$\begin{gathered} a^2=12^2+5^2 \\ a=\sqrt[]{169} \\ a=13 \end{gathered}$

Then:

$hypotenuse=13$

Substituting values, you get:

$\sin x\degree=\frac{5}{13}$$\cos yº=\frac{5}{13}$

You can notice that the ratios are identical.

The answer is:

$\sin x\degree=\frac{5}{13}$$\cos yº=\frac{5}{13}$

The ratios are identical.