trigonometry

Related Questions

• The shadow of a tower standing on a level ground is found to be 60 m longer when the sun's altitude is 30° than when it is 45°. The height of the tower is

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• If the area of a triangle ABC is $\Delta$, then ${{a}^{2}}\sin 2B+{{b}^{2}}\sin 2A$ is equal to

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• If $\cos A=\cos B\,\,\cos C$and $A+B+C=\pi ,$ then the value of $\cot \,B\,\cot \,C$ is

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• $\tan 1{}^\circ \tan 2{}^\circ \tan 3{}^\circ \tan 4{}^\circ ........\tan 89{}^\circ =$

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• If $\cos (A-B)=\frac{3}{5}$ and $\tan A\tan B=2,$ then

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