trigonometry

Related Questions

• The value of $\cos 15{}^\circ -\sin 15{}^\circ $is equal to

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• If $A+B+C=\pi \,(A,B,C>0)$ and the angle C is obtuse then

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• The angle of depression of a point situated at a distance of 70 metres from the base of a tower is 45°. The height of the tower is

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• If ${{a}^{2}},{{b}^{2}},{{c}^{2}}$ are in A. P. then which of the following are also in A.P.

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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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