### Home > PC > Chapter 6 > Lesson 6.2.1 > Problem 6-78

6-78.

Prove that ^{2}*x*. Homework Help ✎

Rewrite the expression on the left using only sine and cosine.

6-78.

Prove that ^{2}*x*. Homework Help ✎

Rewrite the expression on the left using only sine and cosine.