trigonometry

Related Questions

• $2{{\sin }^{2}}x+{{\sin }^{2}}2x=2,\,-\pi <x<\pi ,$then $x=$

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• If ${{\sin }^{2}}\theta -2\cos \theta +\frac{1}{4}=0,$then the general value of $\theta $is

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• If $2\tan A=3\tan B,$then $\frac{\sin 2B}{5-\cos 2B}$is equal to

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• In a triangle ABC, $a=5,b=7$ and $\sin A=\frac{3}{4}$ how many such triangles are possible

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• If $0\le x\le \pi $and ${{81}^{{{\sin }^{2}}x}}+{{81}^{{{\cos }^{2}}x}}=30$, then x =

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