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Solving trigonometric equations with multiple angles can be challenging, but you can definitely do it! Here are some important tips I've learned:

1. Understanding Angles: Angles like $2\theta$ or $\theta/2$ can really change what you’re doing.

2. Use Identities: Remember to use formulas like the double angle formulas. For example, $\sin(2\theta) = 2\sin(\theta)\cos(\theta)$ can be really helpful!

3. Finding Solutions: First, make your equation equal to zero. Try to factor it if you can. Then, use the unit circle to find all the angles you need within the given range.

With some practice, it gets easier!