trigonometry

Related Questions

• In $\Delta ABC$ , $c\cos (A-\alpha )+a\cos (C+\alpha )=$

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• If $\alpha +\beta -\gamma =\pi ,$then${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta -{{\sin }^{2}}\gamma =$

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• If $A={{\cos }^{2}}\theta +{{\sin }^{4}}\theta ,$ then for all values of $\theta$

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• If A, B, C are acute positive angles such that $A+B+C=\pi $ and $\cot A\,\cot \,B\,\cot \,C=K,$ 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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