If CosA=1/2, CosB=1/4 and a = 12, find the value of b in simplest radical form.

Answer 1

cos A = 1 / 2 ⇒ sin A = √3 / 2

cos B = 1 / 4 ⇒ sin B = √15 / 4

sin A / a = sin B / b

(√3 / 2) / 12 = (√15 / 4) / b

Can you solve for b and answer?