CPM Homework Help : PCT Problem 6-129

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Home > PCT > Chapter Ch6 > Lesson 6.3.2 > Problem 6-129

6-129.

Solve the following equations for $θ$ on $[0, 2π]$ .

$\sin 2θ=0$
Hint (a):
1. Substitute using the Double-Angle Formula.
2. Set each factor equal to $0$ and solve.

$\sin^2 θ=\cos^2 θ$
Hint (b):
1. Set the equation equal to $0$ .
2. Factor.
3. Set the factors equal to $0$ and solve.
4. Note the domain.

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