trigonometry

Related Questions

• If $m\tan (\theta -30{}^\circ )=n\tan (\theta +120{}^\circ ),$ then $\frac{m+n}{m-n}=$

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• If $\tan \theta =\frac{-4}{3},$then$\sin \theta =$

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• If $\sin A=\frac{4}{5}$and $\cos B=-\frac{12}{13},$where A and B lie in first and third quadrant respectively, then $\cos (A+B)=$

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

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• In a triangle $ABC,$ if $a\sin A=b\sin B$ , then the nature of the triangle

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