Question

score: 1/10 current time: 36.4 find: cos a the figure is not drawn to scale answer $\frac{24}{70}$ $\frac{70}{24}$ $\frac{24}{74}$ $\frac{70}{74}$

Explanation:

Step1: Recall cosine - ratio definition

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

Step2: Identify adjacent and hypotenuse

For angle $A$, the adjacent side to angle $A$ is 70 and the hypotenuse is 74.

Step3: Calculate cos A

$\cos A=\frac{70}{74}$.

Answer:

$\frac{70}{74}$