trigonometry

Related Questions

• $\tan \frac{A}{2}$is equal to

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• The expression $2\cos \frac{\pi }{13}.\cos \frac{9\pi }{13}+\cos \frac{3\pi }{13}+\cos \frac{5\pi }{13}$ is equal to

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• If A is the area and 2s the sum of 3 sides of triangle, then

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• If $A={{60}^{o}}$ , $a=5,b=4\sqrt{3}$ in $\Delta ABC$ , then $B =$

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• If $\sin \theta +\cos \theta =\sqrt{2}\cos \alpha $, then the general value of $\theta $ is

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