trigonometry

Related Questions

• If R is the radius of the circumcircle of the $\Delta ABC$and $\Delta $is its area, then

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• In a $\Delta ABC,$ if $\frac{b+c}{11}=\frac{c+a}{12}=\frac{a+b}{13}$ , then $\cos C=$

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• If $x=\cos 10{}^\circ \cos 20{}^\circ \cos 40{}^\circ ,$then the value of $x$ is

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• Period of $|\sin 2x|$ is

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• The equation ${{\sin }^{4}}x+{{\cos }^{4}}x+\sin 2x+\alpha =0$is solvable for

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