Question

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

Answer 1

option A

use sin because it's formula is opposite/hypotenuse

=BC/AB

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Answer 2

You know the opposite side of the angle and want to find the hypotenuse

Sin(angle) = opposite/ hypotenuse

You would use the sine function