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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• If $\sin \theta +\cos \theta =1$, then $\sin \theta \cos \theta =$

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• If $\frac{\sin (x+y)}{\sin (x-y)}=\frac{a+b}{a-b},$then $\frac{\tan x}{\tan y}$ is equal to

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• The value of $\cos 52{}^\circ +\cos 68{}^\circ +\cos 172{}^\circ $ is

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• 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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