trigonometry

Related Questions

• If the median of $\Delta ABC$ through A is perpendicular to $AB$ , then

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• If $x=y\cos \frac{2\pi }{3}=z\cos \frac{4\pi }{3}$, then $xy+yz+zx=$

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• The sum $S=\sin \theta +\sin 2\,\theta +....+\sin \,n\theta ,$ equals

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• In an equilateral triangle of side $2\sqrt{3}$cm, the circum-radius is

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• If $\cos \theta =\frac{-1}{2}$and ${{0}^{o}}<\theta <{{360}^{o}}$, then the values of $\theta $are

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