Question

question
express cos x as a fraction in simplest terms.
answer
cos x =

Explanation:

Step1: Recall cosine - ratio formula

In a right - triangle, $\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}$.

Step2: Identify adjacent and hypotenuse for angle $X$

For angle $X$ in right - triangle $XWV$, the side adjacent to angle $X$ is $XW = 3$, and the hypotenuse is $XV=5$.

Step3: Calculate $\cos X$

$\cos X=\frac{XW}{XV}=\frac{3}{5}$

Answer:

$\frac{3}{5}$