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Home > PC > Chapter 7 > Lesson 7.3.1 > Problem 7-97

7-97.

Expand each of the squared terms.

1 + 4sinθ + 4sin2θ + 4cos2θ

Factor 4 out of the squared terms.

1 + 4sinθ + 4(sin2θ + cos2θ)

Use the Fundamental Pythagorean Identity to simplify.

1 + 4sinθ + 4

Simplify.