trigonometry

Related Questions

• If $\frac{\cos A}{\sin B\sin C}+\frac{\cos B}{\sin C\sin A}+\frac{\cos C}{\sin A\sin B}=$then $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right)=$

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• In $\Delta ABC,\ \,2{{R}^{2}}\sin A\sin B\sin C=$

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• If $A+B+C={{180}^{o}},$ then $\frac{\tan A+\tan B+\tan C}{\tan A\,.\,\tan B\,.\,\tan C}=$

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

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• If in a triangle the angles are in A. P. and $b:c=\sqrt{3}:\sqrt{2}$ , then $\angle A$ is equal to

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