You guys I don’t even know how to start this help please!!!

Use the right triangle below to solve.

Which trig function should be used to find side AB if you know the measure of angle A and side CB?

A sine
B cosine
C tangent
D none of these

You guys I dont even know how to start this help please Use the right triangle below to solve Which trig function should be used to find side AB if you know the class=