trigonometry

Related Questions

• In a triangle $ABC$ , $AD$ is altitude from A. Given $b>c,$ $\angle C={{23}^{o}}$ and $AD=\frac{abc}{{{b}^{2}}-{{c}^{2}}},$ then $\angle B=$

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• If ${{\sin }^{2}}\theta =\frac{1}{4},$then the most general value of $\theta $is

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• The angles of a triangle are in the ratio $1:3:5$ , then the greatest angle is

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• If $\sec x\cos 5x+1=0$, where $0<x<2\pi $, then $x =$

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• In $\Delta ABC,{{(a-b)}^{2}}{{\cos }^{2}}\frac{C}{2}+{{(a+b)}^{2}}{{\sin }^{2}}\frac{C}{2}=$

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