trigonometry

Related Questions

• If $\frac{\pi }{2}<\alpha <\pi ,\,\text{ }\pi <\beta <\frac{3\pi }{2};$ $\sin \alpha =\frac{15}{17}$ and $\tan \beta =\frac{12}{5}$, then the value of $\sin (\beta -\alpha )$ is

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• In a $\Delta ABC,$ $2a\sin \,\,\left( \frac{A-B+C}{2} \right)$ is equal to

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• If $5\cos 2\theta +2{{\cos }^{2}}\frac{\theta }{2}+1=0,-\pi <\theta <\pi $, then $\theta =$

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• .$\cos 2(\theta +\varphi )-4\cos (\theta +\varphi )\sin \theta \sin \varphi +2{{\sin }^{2}}\varphi =$

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• .The value of x for maximum value of $(\sqrt{3}\,\sin x+\cos x)$ is

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