trigonometry

Related Questions

• The angle of elevation of a tower from a point A due south of it is 30° and from a point B due west of it is 45°. If the height of the tower be 100 metres, then AB =

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• If $x+\frac{1}{x}=2\cos \alpha $, then ${{x}^{n}}+\frac{1}{{{x}^{n}}}=$

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• $\tan 20{}^\circ \tan 40{}^\circ \tan 60{}^\circ \tan 80{}^\circ =$

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• If in triangle $ABC,\cos A=\frac{\sin B}{2\sin C}$ , then the triangle is

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• If $\tan \beta =\cos \theta \tan \alpha ,$then ${{\tan }^{2}}\frac{\theta }{2}=$

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