trigonometry

Related Questions

• In a triangle $ABC$ , sin$A:\sin B$ : $\sin C=1:2:3$. If $b=4$ cm, the perimeter of the triangle is

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• If $x{{\sin }^{3}}\alpha +y{{\cos }^{3}}\alpha =\sin \alpha \cos \alpha $ and $x\sin \alpha -y\cos \alpha =0,$ then ${{x}^{2}}+{{y}^{2}}=$

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• The only value of x for which ${{2}^{\sin x}}+{{2}^{\cos x}}>{{2}^{1-(1/\sqrt{2})}}$ holds, is

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• $\sqrt{\frac{1-\sin A}{1+\sin A}}=$

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• If $\frac{1-{{\tan }^{2}}\theta }{{{\sec }^{2}}\theta }=\frac{1}{2}$, then the general value of $\theta $is

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