Use the sum-to-product formulas to write the sum as a product. sin 7θ − sin 3θ...

Question

Question

Use the sum-to-product formulas to write the sum as a product.

sin 7θ − sin 3θ

cos 2θ cos 4θ

Use the power-reducing formulas to rewrite the expression in terms of first powers of the cosines of multiple angles.

sin⁴(2x)

Answer 1

Answer #1

A+B

Answer 2

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