trigonometry

Related Questions

• The equation ${{\sec }^{2}}\theta =\frac{4xy}{{{(x+y)}^{2}}}$is only possible when

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• In $\Delta \,ABC$ , $a=2cm,b=3cm$ and $c=4cm$ , then angle A is

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• If $x+y+z={{180}^{o}},$ then $\cos 2x+\cos 2y-\cos 2z$ is equal to

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• If $A={{30}^{o}},a=7,b=8$ in $\Delta ABC$ , then B has

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• $(\sec 2A+1){{\sec }^{2}}A=$

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