### Home > PC > Chapter 4 > Lesson 4.1.3 > Problem4-39

4-39.
1. Reminder: (sin θ)2 is usually written as sin2 θ. However, the first form must be used on your calculator. Also, sin θ2 means to square θ first and then take the sine. If sin θ = 0.6 and θ , find the following values or state “impossible without a calculator.” Homework Help ✎

1. (sin θ)2

2. sin2 θ

3. sin θ2

This is (0.6)(0.6): 0.36

This is the same as (a) above.

This is impossible because θ is unknown.