trigonometry

Related Questions

• ${{(\cos \alpha +\cos \beta )}^{2}}+{{(\sin \alpha +\sin \beta )}^{2}}=$

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

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• If $3({{\sec }^{2}}\theta +{{\tan }^{2}}\theta )=5$, then the general value of $\theta $ is

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• If $\sin \text{ }\left( \frac{\pi }{4}\cot \theta \right)=\cos \text{ }\left( \frac{\pi }{4}\tan \theta \right)\,\,,$ then $\theta =$

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• $\text{cosec }A-2\cot 2A\cos A=$

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