trigonometry

Related Questions

• The base of a cliff is circular. From the extremities of a diameter of the base the angles of elevation of the top of the cliff are 30° and 60°. If the height of the cliff be 500 metres, then the diameter of the base of the cliff is

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• General solution of $\tan 5\theta =\cot 2\theta $ is

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• If $A+B+C={{180}^{o}},$then $\sum{\tan \frac{A}{2}\tan \frac{B}{2}=}$

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• In$\Delta ABC,$ if $2(bc\cos A+ca\cos B+ab\cos C)=$

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• $\cos \frac{\pi }{5}\cos \frac{2\pi }{5}\cos \frac{4\pi }{5}\cos \frac{8\pi }{5}=$

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