trigonometry

Related Questions

• In $\Delta ABC$ , if $\tan \frac{A}{2}\tan \frac{C}{2}=\frac{1}{2},$ then $a,b,c$ are in

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• The ratio of the sides of triangle ABC is $1:\sqrt{3}:2$. The ratio of $A:B:C$ is

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• Which of the following is correct

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• $\tan 9{}^\circ -\tan 27{}^\circ -\tan 63{}^\circ +\tan 81{}^\circ =$

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• If $(1+\tan \theta )(1+\tan \varphi )=2$, then $\theta +\varphi $=

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