trigonometry

Related Questions

• $\frac{{{\sin }^{2}}A-{{\sin }^{2}}B}{\sin A\cos A-\sin B\cos B}=$

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• In a triangle ABC, $a:b:c=4:5:6$. The ratio of the radius of the circumcircle to that of the incircle is

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• If $\sin \alpha =\frac{-3}{5},$where $\pi <\alpha <\frac{3\pi }{2},$then $\cos \frac{1}{2}\alpha =$

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• If in $\Delta ABC,$ $a=6,b=3$ and $\cos (A-B)=\frac{4}{5}$ , then its area will be

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• The solution of $3\tan (A-{{15}^{o}})=\tan (A+{{15}^{o}})$ is

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