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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• $\sqrt{2+\sqrt{2+2\cos 4\theta }}=$

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• If $A+B+C={{270}^{o}},$ then $\cos \,2A+\cos 2B+\cos 2C+4\sin A\,\sin B\,\sin C=$

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• If $\tan \theta =\frac{a}{b},$then $\frac{\sin \theta }{{{\cos }^{8}}\theta }+\frac{\cos \theta }{{{\sin }^{8}}\theta }=$

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• A tree is broken by wind, its upper part touches the ground at a point 10 metres from the foot of the tree and makes an angle of 45° with the ground. The total length of tree is

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