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How do you simplify 2 sin (4theta) cos (4theta), using a double-angle formula?

How do you simplify 2 sin (4theta) cos (4theta), using a double-angle formula?
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How do you simplify 2 sin (4theta) cos (4theta), using a double-angle formula?

User Qiang Li
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sin(4θ)=sin(2⋅2θ) You would use the double angle formula twice here. hope this helps :D
User Marko Kevac
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