trigonometry

Related Questions

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

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• In any triangle ABC ,${{\sin }^{2}}\frac{A}{2}+{{\sin }^{2}}\frac{B}{2}+{{\sin }^{2}}\frac{C}{2}$ is equal to

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• If in a triangle $ABC$ , $b=\sqrt{3}$ , $c=1$ and $B-C={{90}^{o}}$ then $\angle A$ is

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• If $A={{\sin }^{2}}\theta +{{\cos }^{4}}\theta ,$ then for all real values of $\theta$

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• If in a $\Delta ABC$ , $\cos 3A+\cos 3B+\cos 3C=1$ , then one angle must be exactly equal to

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