trigonometry

Related Questions

• If $\frac{1-\cos 2\theta }{1+\cos 2\theta }=3$, then the general value of$\theta $ is

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• If $\cos A=\frac{\sqrt{3}}{2},$then $\tan 3A=$

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• If ${{\sin }^{2}}\theta =\frac{{{x}^{2}}+{{y}^{2}}+1}{2x}$, then x must be

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• If the line segment joining the points $A(a,\,b)$ and $B(c,\,d)$ subtends an angle $\theta $ at the origin, then $\cos \theta $ is equal to

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• In any triangle $AB=2,BC=4,CA=3$ and D is mid point of BC, then

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