### Home > PC3 > Chapter Ch8 > Lesson 8.2.1 > Problem 8-63

8-63.

Use the Pythagorean Identity to simplify each trigonometric expression.

Review your work from problem 8-47.

Factor out a

first.

8-63.

Use the Pythagorean Identity to simplify each trigonometric expression.

Review your work from problem 8-47.

Factor out a

first.