Question

Given the triangle below, what is m B

15
340
С
A
18
Triangle not drawn to scale

Answer 1

9514 1404 393

Answer:

C. 42.1°

Explanation:

The Law of Sines is applicable.

sin(B)/b = sin(C)/c

sin(B) = 18/15×sin(34°)

B = arcsin(6/5×sin(34°)) ≈ 42.1° . . . measure of ∠B