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Simplification
What is the value of [(cos 3θ + 2cos 5θ + cos 7θ)÷(cos θ + 2cos 3θ + cos 5θ)] + sin 2θ tan 3θ?
cos 2θ
sin 2θ
tan 2θ
cot θ sin 2θ
Correct Answer:
cos 2θ
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