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Question Number 93367 by Rio Michael last updated on 12/May/20

$$\mathrm{show}\mathrm{using}\mathrm{demoives}\mathrm{theorem}\mathrm{that}$$$${\sin }^2\theta {\cos }^{2}4\theta =\frac{1}{8}(1-\cos 4\theta )$$

Commented by prakash jain last updated on 14/May/20

$$\mathrm{Please}\mathrm{recheck}\mathrm{question}.$$$$\mathrm{put}\theta =\pi /2$$$$\mathrm{LHS}\ne \mathrm{RHS}$$

Commented by Rio Michael last updated on 14/May/20

$$\mathrm{thank}\mathrm{you}\mathrm{sir}$$

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