trigonometry

Related Questions

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

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• In a $\Delta ABC,$ $2a\sin \,\,\left( \frac{A-B+C}{2} \right)$ is equal to

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• If $\sec \theta =1\frac{1}{4}$, then $\tan \frac{\theta }{2}=$

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• If $\sin x+{{\sin }^{2}}x=1,$then ${{\cos }^{8}}x+2{{\cos }^{6}}x+{{\cos }^{4}}x=$

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• If ${{\tan }^{2}}\alpha {{\tan }^{2}}\beta +{{\tan }^{2}}\beta {{\tan }^{2}}\gamma +{{\tan }^{2}}\gamma {{\tan }^{2}}\alpha +2{{\tan }^{2}}\alpha {{\tan }^{2}}\beta {{\tan }^{2}}\gamma =1,$then the value of ${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +{{\sin }^{2}}\gamma $is

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