Use half angle or power reduction formulas to fill in the blanks in the identity below:

Question

Use half angle or power reduction formulas to fill in the blanks in the identity below:

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Answer 1

sin⁴ (3x)

[sin² (3x)][sin² (3x)]

[(1 - cos 6x) / 2][(1 - cos 6x) / 2]

(1 - 2 cos 6x + cos² 6x) / 4

Review the post for accuracy.