trigonometry

Related Questions

• In $\Delta ABC,\frac{\sin B}{\sin (A+B)}=$

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• The general solution of the equation $(\sqrt{3}-1)\sin \theta +(\sqrt{3}+1)\cos \theta =2$ is

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• The expression $2\cos \frac{\pi }{13}.\cos \frac{9\pi }{13}+\cos \frac{3\pi }{13}+\cos \frac{5\pi }{13}$ 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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• Values of $\theta (0<\theta <{{360}^{o}})$ satisfying $\text{cosec}\theta +2=0$ are

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