trigonometry

Related Questions

• 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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• The general value of $\theta $ satisfying the equation $\tan \theta +\tan \left( \frac{\pi }{2}-\theta \right)=2$, is

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• The angle of elevation of a stationary cloud from a point 2500 m above a lake is 15° and the angle of depression of its reflection in the lake is 45°. The height of cloud above the lake level is

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• If $(\sec \alpha +\tan \alpha )(\sec \beta +\tan \beta )(\sec \gamma +\tan \gamma )=\tan \alpha \tan \beta \tan \gamma $, then $(\sec \alpha -\tan \alpha )(\sec \beta -\tan \beta )$ then $(\sec \gamma -\tan \gamma )=$

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• $\sin (\pi +\theta )\sin (\pi -\theta )\,\text{ cose}{{\text{c}}^{2}}\theta =$

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