trigonometry

Related Questions

• If $\theta $is an acute angle and $\sin \frac{\theta }{2}=\sqrt{\frac{x-1}{2x}}$, then $\tan \theta $ is equal to

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• In triangle ABC, the value of $\sin 2A+\sin 2B+\sin 2C$ is equal to

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• $\frac{\sin 3\theta -\cos 3\theta }{\sin \theta +\cos \theta }+1=$

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• If $a\tan \theta =b$, then $a\cos 2\theta +b\sin 2\theta =$

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• $\cos 1{}^\circ +\cos 2{}^\circ +\cos 3{}^\circ +.....+\cos 180{}^\circ =$

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