Mathematics, 23.01.2020 07:31 stavy5965
Express the product as a sum containing only sines or cosines. 64) sin (5θ) cos (2θ)
Answers: 2
![\bf \textit{Product to Sum Identities} \\\\sin(\alpha)cos(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad +\quad sin(\alpha-\beta)] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ sin(5\theta )cos(2\theta )\implies \cfrac{1}{2}[sin(5\theta +2\theta )+sin(5\theta -2\theta )]\implies \cfrac{sin(7\theta )+sin(3\theta )}{2}](/tpl/images/0467/0817/65b84.png)
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Express the product as a sum containing only sines or cosines. 64) sin (5θ) cos (2θ)...
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