Question

Evaluate the function requested. Write your answer as a fraction in lowest terms.

Answer 1

Answer:

$\cos B=\dfrac{9}{41}$

Step-by-step explanation:

Given that,

Hypotenuse = 82 units

Base = 80 units

Height = 18 units

We need to find the value of cos B.

We know that,

$\cos\theta=\dfrac{Base}{Hypotenuse}$

For angle B, Hypotenuse = 82 units, Height = 80 units and base = 18 units

$\cos B=\dfrac{18}{82}\\\\\cos B=\dfrac{9}{41}$

Hence, the correct option is (A).