trigonometry

Related Questions

• $\sin 36{}^\circ \sin 72{}^\circ \sin 108{}^\circ \sin 144{}^\circ =$

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• If ${{\sin }^{2}}\theta -2\cos \theta +\frac{1}{4}=0,$then the general value of $\theta $is

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• In $\Delta ABC,$if $b=6,\,c=8\,$and $\angle A=90{}^\circ $, then R=

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• If $\tan A=\frac{1}{2},$then $\tan 3A=$

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• If $\sin A+\sin 2A=x$ and $\cos A+\cos 2A=y,$ then $({{x}^{2}}+{{y}^{2}})({{x}^{2}}+{{y}^{2}}-3)=$

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