trigonometry

Related Questions

• From an aeroplane vertically over a straight horizontally road, the angles of depression of two consecutive mile stones on opposite sides of the aeroplane are observed to be $\alpba$ and $\beta$, then the height in miles of aeroplane above the road is

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• $\cos \frac{\pi }{7}\cos \frac{2\pi }{7}\cos \frac{4\pi }{7}=$

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• The only value of x for which ${{2}^{\sin x}}+{{2}^{\cos x}}>{{2}^{1-(1/\sqrt{2})}}$ holds, is

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• $\cos \alpha .\sin (\beta -\gamma )+\cos \beta .\sin (\gamma -\alpha )+\cos \gamma .\sin (\alpha -\beta )=$

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• The general value of $\theta $ satisfying ${{\sin }^{2}}\theta +\sin \theta =2$ is

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