### Home > PC3 > Chapter 8 > Lesson 8.1.2 > Problem 8-35

8-35.

You know that sin

^{2}(*θ*) + cos^{2}(*θ*) = 1. Homework Help ✎What does sin

^{2}(2*θ*) + cos^{2}(2*θ*) = ?What does sin

^{2}(*θ*^{ }^{2}^{2}(*θ*^{ }^{2}

Let *w* = 2*θ*.

What is sin^{2}(*w*) + cos^{2}(*w*)?

Let *w* = *θ*^{2} − 2.