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

4-39.

Reminder: (sin *θ*)^{2}is usually written as sin^{2}*θ*. However, the first form must be used on your calculator. Also, sin*θ*^{2}means to square*θ*first and then take the sine. If sin*θ*= 0.6 and≤ *θ*≤(sin

*θ*)^{2}sin

^{2}*θ*sin

*θ*^{2}

This is (0.6)(0.6): 0.36

This is the same as (a) above.

This is impossible because θ is unknown.