trigonometry

Related Questions

• If $\tan \alpha =\frac{m}{m+1}$and $\tan \beta =\frac{1}{2m+1}$, then $\alpha +\beta =$

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• In any triangle $ABC,\frac{\tan \frac{A}{2}-\tan \frac{B}{2}}{\tan \frac{A}{2}+\tan \frac{B}{2}}=$

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• If $A={{\sin }^{2}}\theta +{{\cos }^{4}}\theta ,$ then for all real values of $\theta$

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• $\frac{\cos {{10}^{o}}+\sin {{10}^{o}}}{\cos {{10}^{o}}-\sin {{10}^{o}}}=$

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• If ${{\cos }^{2}}A+{{\cos }^{2}}C={{\sin }^{2}}B,$ then $\Delta ABC$ is

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