trigonometry

Related Questions

• $\cos 20{}^\circ \cos 40{}^\circ \cos 80{}^\circ =$

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• If the angles $A,B,C$ of a triangle are in A.P. and the sides $a,b,c$ opposite to these angles are in G. P. then ${{a}^{2}},{{b}^{2}},{{c}^{2}}$ are in

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• In a $\Delta ABC$ , if $\angle C={{30}^{o}}$ , $a=47cm$ and $b=94$ cm, then the triangle is

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• The value of ${{\cos }^{2}}\frac{\pi }{12}+{{\cos }^{2}}\frac{\pi }{4}+{{\cos }^{2}}\frac{5\pi }{12}$ is

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• If the median of $\Delta ABC$ through A is perpendicular to $AB$ , then

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