1-2sin^2(3a)

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1-2sin^2(3a)

Guest May 11, 2015

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Best Answer

In general cos(2x) = 1 - 2sin²(x) so another way of writing 1 - 2sin²(3a) is cos(6a)

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Alan May 11, 2015

Alan · Answer 1 · 2015-05-11T08:03:24

In general cos(2x) = 1 - 2sin²(x) so another way of writing 1 - 2sin²(3a) is cos(6a)

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