trigonometry

Related Questions

• If ${{\sin }^{2}}\theta =\frac{1}{4},$then the most general value of $\theta $is

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• $\cos 1{}^\circ +\cos 2{}^\circ +\cos 3{}^\circ +.....+\cos 180{}^\circ =$

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• If $A+B+C=\pi \,(A,B,C>0)$ and the angle C is obtuse then

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• If n is any integer, then the general solution of the equation $\cos x-\sin x=\frac{1}{\sqrt{2}}$ is

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• The value of $\frac{\tan {{70}^{o}}-\tan {{20}^{o}}}{\tan {{50}^{o}}}=$

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