trigonometry

Related Questions

• If $\tan \theta =-\frac{1}{\sqrt{10}}$and $\theta $ lies in the fourth quadrant, then $\cos \theta =$

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• If $A+B+C={{180}^{o}},$ then the value of $\cot \frac{A}{2}+\cot \frac{B}{2}+\cot \frac{C}{2}$ will be

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• If $\sin \text{ }\left( \frac{\pi }{4}\cot \theta \right)=\cos \text{ }\left( \frac{\pi }{4}\tan \theta \right)\,\,,$ then $\theta =$

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• $\sqrt{2+\sqrt{2+2\cos 4\theta }}=$

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• If $\tan \alpha =\frac{1}{7}$and $\sin \beta =\frac{1}{\sqrt{10}}\left( 0<\alpha ,\,\beta <\frac{\pi }{2} \right)$, then $2\beta $is equal to

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