trigonometry

Related Questions

• If $\sin \theta +\sin \varphi =a$and $\cos \theta +\cos \varphi =b,$then $\tan \frac{\theta -\varphi }{2}$is equal to

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• A person standing on the bank of a river finds that the angle of elevation of the top of a tower on the opposite bank is 45°. Then which of the following statements is correct

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• If the sides of the triangle are $5K,\ 6K,\ 5K$and radius of incircle is 6 then value of K is equal to

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• The angle of elevation of the sun, when the shadow of the pole is $\sqrt{3}$ times the height of the pole, is

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• The equation ${{(a+b)}^{2}}=4ab{{\sin }^{2}}\theta $is possible only when

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