SOLUTION: Use the given conditions to find the exact value of the expression. sin α = − 5/13, tan α > 0, sin(α − 2π/3) I am not sure if I need to solve for sin a=-5/13 or sin (

Question 1158674: Use the given conditions to find the exact value of the expression.
sin α = − 5/13, tan α > 0, sin(α − 2π/3)
I am not sure if I need to solve for sin a=-5/13 or sin (a-2π/3)
Please help! I want to know how to do this problem so if you could walk me through it that would help a lot! Thank you.

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
use the given conditions to find the exact value of the expression:
, ,
Since , and , it follows that (Third quadrant)
So

so,

Substituting values: ,, ,

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