Question

Which proportion could be used to find the length of side b?

Answer 1

A

Explanation:

`(sin A)/(a) = (sin B)/(b) = (sin C)/(c)`

Also, you need to subtract the 2 known angles from 180 to find the missing angle measurement. 180 - 85 - 64 = 31

The angles go with the side lengths opposite them.

`(sin 64)/(a) = (sin 85)/(b) = (sin 31)/(9.3)`