Question

score: 2/10 current time: 31.0 find: cos a the figure is not drawn to scale answer 12/16 16/12 12/20 16/20

Explanation:

Step1: Recall cosine - ratio definition

In a right - triangle, $\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}$. For angle $A$ in the given right - triangle, the side adjacent to angle $A$ is 16 and the hypotenuse is 20.

Step2: Calculate $\cos A$

$\cos A=\frac{16}{20}$

Answer:

$\frac{16}{20}$