Question

17 mark for review note: figure not drawn to scale. in the triangle shown, what is the value of cos x°?

Explanation:

Step1: Recall cosine definition

In a right - triangle, $\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}$. For angle $x^{\circ}$, the adjacent side to angle $x^{\circ}$ has length 11 and the hypotenuse has length 28.

Step2: Calculate cosine value

$\cos x^{\circ}=\frac{11}{28}$

Answer:

$\frac{11}{28}$