trigonometry

Related Questions

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

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• $\text{cosec }A-2\cot 2A\cos A=$

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• A tower subtends an angle $\alpha$ at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is $\beta$. The height of the tower is

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• If $\tan A=\frac{1-\cos B}{\sin B},$find$\tan 2A$in terms of $\tan B$ and show that

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• $\tan \frac{2\pi }{5}-\tan \frac{\pi }{15}-\sqrt{3}\tan \frac{2\pi }{5}\tan \frac{\pi }{15}$ is equal to

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