trigonometry

Related Questions

• A, B, C are the angles of a triangle, then ${{\sin }^{2}}A+{{\sin }^{2}}B+{{\sin }^{2}}C-2\cos A\,\cos B\,\cos C=$

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• If $\tan \theta +\tan 2\theta +\tan 3\theta =\tan \theta \tan 2\theta \tan 3\theta $, then the general value of $\theta $ is

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• The equation $3\cos x+4\sin x=6$has

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• Period of $|\sin 2x|$ is

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• In $\Delta ABC,\frac{\sin B}{\sin (A+B)}=$

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