trigonometry

Related Questions

• The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is

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• In $\Delta ABC,$ if ${{\sin }^{2}}\frac{A}{2},{{\sin }^{2}}\frac{B}{2},{{\sin }^{2}}\frac{C}{2}$ be in H. P. then a, b, c will be in

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• The expression $(1+\tan x+{{\tan }^{2}}x)$ $(1-\cot x+{{\cot }^{2}}x)$ has the positive values for x, given by

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• If $\tan \frac{\theta }{2}=t,$then $\frac{1-{{t}^{2}}}{1+{{t}^{2}}}$is equal to

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• If $|k|\,=5$and ${{0}^{o}}\le \theta \le {{360}^{o}}$, then the number of different solutions of 3$\cos \theta +4\sin \theta =k$ is

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