Question

unit review - right triangles and trigonometry
skip
find the cosine of x.
$\cos(x^\circ) = \frac{?}{}$
simplify completely.
remember: soh-cah-toa

Explanation:

Step1: Recall cosine definition (CAH)

For angle $x^\circ$, cosine is $\frac{\text{adjacent side}}{\text{hypotenuse}}$

Step2: Identify sides for $x^\circ$

Adjacent side to $x^\circ$ is $5$, hypotenuse is $13$.

Step3: Substitute values into formula

$\cos(x^\circ) = \frac{5}{13}$

Answer:

$\frac{5}{13}$