trigonometry

Related Questions

• If $\sec \theta =1\frac{1}{4}$, then $\tan \frac{\theta }{2}=$

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• The value of $\frac{\cot 54{}^\circ }{\tan 36{}^\circ }+\frac{\tan 20{}^\circ }{\cot 70{}^\circ }$ is

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• In $\Delta ABC,$ if $a=16,b=24$ and $c=20,$ then $\cos \frac{B}{2}=$

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• If $\sin 2\theta =\cos 3\theta $and $\theta $is an acute angle, then $\sin \theta $is equal to

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• $\sqrt{2+\sqrt{2+2\cos 4\theta }}=$

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