### Home > CALC > Chapter 6 > Lesson 6.3.1 > Problem 6-82

6-82.

Review the trigonometric Pythagorean identities from Chapter 1 Math Note listed below.

Use one of the equations to find a new expression for

. Similarly, write a new expression for

. Refer to part (a).

Similarly, write a new expression for

. Refer to part (a).