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Use the power reducing formulas to rewrite: sin²(3x)cos²(3x)
In terms of the first power of cosine. Simplify your answer as much as possible.
To indicate your answer, first choose one of the four forms below:
1) sin²(3x)cos²(3x) = __ - __ cos __ x + __ cos __ x
2) sin²(3x)cos²(3x) = __ + __ cos __ x + __ cos __ x
3) sin²(3x)cos²(3x) = __ - __ cos __ x
4) sin²(3x)cos²(3x) = __ + __ cos __ x
Then fill in the blanks (__) with the appropriate numbers.
Sagot :
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