trigonometry

Related Questions

• In $\Delta ABC$ , if $a=3,b=4,c=5$ , then $\sin 2B=$

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• If the sides of a triangle are $3,\ 5,\ 7,$ then

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• If $\tan A-\tan B=x$ and $\cot B-\cot A=y,$then $\cot (A-B)=$

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

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