### Home > PC > Chapter 6 > Lesson 6.2.2 > Problem 6-88

6-88.

Use the angle difference formula for sine to simplify sin(*π *− *θ*). Write your answer as an identity, and check it for *θ* =* *. Homework Help ✎

sin(*π* − *θ*) = sin*π* cos*θ* − cos*π* sin*θ*

= 0·cos*θ* − (−1) · sin*θ*

sin(*π* − θ) = sin*θ*