trigonometry

Related Questions

• $\sin 36{}^\circ \sin 72{}^\circ \sin 108{}^\circ \sin 144{}^\circ =$

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• If the sides of the triangle are $5K,\ 6K,\ 5K$and radius of incircle is 6 then value of K is equal to

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• If the angles of a triangle be in the ratio $1 : 2 : 7$, then the ratio of its greatest side to the least side is

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• If $\sin 3\alpha =4\sin \alpha \sin (x+\alpha )\sin (x-\alpha ),$then $x=$

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• The lengths of the sides of a triangle are $\alpha -\beta ,\alpha +\beta $ and $\sqrt{3{{\alpha }^{2}}+{{\beta }^{2}}},$ $(\alpha >\beta >0)$. Its largest angle is

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