### Home > PC3 > Chapter 2 > Lesson 2.2.1 > Problem 2-55

2-55.

Reminder: first and then take the sine. If

This expression is another way to write the expression given in part (a).

The value of

needs to be determined first, then squared.

2-55.

Reminder: first and then take the sine. If

This expression is another way to write the expression given in part (a).

The value of

needs to be determined first, then squared.