trigonometry

Related Questions

• From a point a metre above a lake the angle of elevation of a cloud is $\alpha$ and the angle of depression of its reflection is $\beta$. The height of the cloud is

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• A vertical pole consists of two parts, the lower part being one third of the whole. At a point in the horizontal plane through the base of the pole and distance 20 meters from it, the upper part of the pole subtends an angle whose tangent is $\frac{1}{2}$. The possible heights of the pole are

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• The number of solutions of the given equation $\tan \theta +\sec \theta =\sqrt{3},$ where $0 < \theta <2\pi $is

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• Common roots of the equations $2{{\sin }^{2}}x+{{\sin }^{2}}2x=2$ and $\sin 2x+\cos 2x=\tan x,$ are

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• In $\Delta ABC,$ if ${{\sin }^{2}}\frac{A}{2},{{\sin }^{2}}\frac{B}{2},{{\sin }^{2}}\frac{C}{2}$ be in H. P. then a, b, c will be in

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