Sin(2\theta )sin(4\theta )cos(2\theta )cos(4\theta )=? complete identity

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asked Oct 16, 2018 177k views

1 Answer

Chopin · Answer 1 · 2018-10-22T01:44:28+0000

group as
sin(2T)Cos(2T)Sin(4T)Cos(4T)
Using the identity 2Sin(x)Cos(x) = Sin(2x),
=(1/4)Sin(4T)Sin(8T)
where T is theta.
I don't think there is a more simple reduction.

Sin(2\theta )sin(4\theta )cos(2\theta )cos(4\theta )=? complete identity

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