Question

MY

Answer 1

Answer:

<B = 56.25°

Step-by-step explanation:

Reference angle = B

Hypotenuse = AB = 9

Adjacent = BC = 5

Applying trigonometric ratio:

$cos (B) = \frac{adj}{hyp}$

$cos (B) = \frac{5}{9}$

$B = cos^{-1}(\frac{5}{9})$

B = 56.25° (nearest hundredth)