trigonometry

Related Questions

• In a $\Delta ABC$ , $\frac{\cos A}{a}=\frac{\cos B}{b}=\frac{\cos C}{c}$ and the side $a=2,$ then area of the triangle is

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• If $\cos \theta +\sec \theta =\frac{5}{2}$, then the general value of $\theta $is

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• The maximum value of ${{\cos }^{2}}\left( \frac{\pi }{3}-x \right)-{{\cos }^{2}}\left( \frac{\pi }{3}+x \right)$ is

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• If $\tan A-\tan B=x$ and $\cot B-\cot A=y,$then $\cot (A-B)=$

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• If $\cos \theta =\frac{-1}{2}$and ${{0}^{o}}<\theta <{{360}^{o}}$, then the values of $\theta $are

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