### Home > PC > Chapter 5 > Lesson 5.2.4 > Problem 5-90

5-90.

Verify the following trigonometric identities. Intermediate steps may involve complex fractions.

Fundamental Pythagorean Identities:

Change all terms to sine and cosine.

5-90.

Verify the following trigonometric identities. Intermediate steps may involve complex fractions.

Fundamental Pythagorean Identities:

Change all terms to sine and cosine.