trigonometry

Related Questions

• If $A+B+C=\pi ,$ then $\frac{\cos A}{\sin B\sin C}+\frac{\cos B}{\sin C\sin A}+\frac{\cos C}{\sin A\sin B}=$

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• $\tan 75{}^\circ -\cot 75{}^\circ =$

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• 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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• The value of $a\cos \theta +b\sin \theta $lies between

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• If $\tan \theta =t,$then $\tan 2\theta +\sec 2\theta =$

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