Question

score:0/10 current time:4.4 find: cos b the figure is not drawn to scale answer 72/21 21/75 21/72 72/75

Explanation:

Step1: Recall cosine definition

In a right - triangle, $\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}$. For angle $B$, the adjacent side to angle $B$ is 72 and the hypotenuse is 75.

Step2: Calculate cos B

$\cos B=\frac{72}{75}$

Answer:

$\frac{72}{75}$