trigonometry

Related Questions

• If $\sin \theta =\sqrt{3}\cos \theta ,-\pi <\theta <0$, then $\theta =$

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

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• $\tan 5x\tan 3x\tan 2x=$

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• If $\alpha +\beta -\gamma =\pi ,$then${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta -{{\sin }^{2}}\gamma =$

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• In$\Delta ABC,$ if $\cos A+\cos C=4{{\sin }^{2}}\frac{1}{2}B,$ then $a,b,c$ are in

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