trigonometry

Related Questions

• The values of $\theta $ satisfying $\sin 7\theta =\sin 4\theta -\sin \theta $ and $0 < \theta < \frac{\pi }{2}$ are

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• Point D, E are taken on the side BC of a triangle $ABC$ such that $BD=DE=EC$.If $\angle BAD=x$ , $\angle DAE=y$ , $\angle EAC=z$ , then the value of $\frac{\sin (x+y)\sin (y+z)}{\sin x\sin z}=$

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• The maximum value of the function $f(x)=3\sin x+4\cos x$ is

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• If A, B, C, D are the angles of a cyclic quadrilateral, then $\cos \,A+\cos B+\cos \,\,C+\cos D=$

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• $\tan \frac{A}{2}$is equal to

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