trigonometry

Related Questions

• If $\tan \theta =\frac{20}{21}$, $\cos \theta$ will be

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• If in a triangle $ABC,$ $(s-a)(s-b)=s\,\,(s-c)$ , then angle C is equal to

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• General value of $\theta $ satisfying the equation ${{\tan }^{2}}\theta +\sec 2\theta -=1$ is (Where m and n are integers)

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• In a $\Delta ABC$ $a,\ c,A$ are given and ${{b}_{1}},\ {{b}_{2}}$ are two values of the third side b such that ${{b}_{2}}=2{{b}_{1}}$. Then $\sin A=$

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• The shadow of a tower is found to be 60 metre shorter when the sun’s altitude changes from ${{30}^{o}}$ to ${{60}^{o}}$. The height of the tower from the ground is approximately equal to

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