trigonometry

Related Questions

• A circular wire of radius $7\,cm$ is cut and bend again into an arc of a circle of radius $12cm$. The angle subtended by the arc at the centre is

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• If in a triangle $ABC,a=5,b=4,A=\frac{\pi }{2}+B$ , then C

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• If $\pi <\alpha <\frac{3\pi }{2}$, then $\sqrt{\frac{1-\cos \alpha }{1+\cos \alpha }}+\sqrt{\frac{1+\cos \alpha }{1-\cos \alpha }}$=

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• The period of the function $\sin \left( \frac{2x}{3} \right)+\sin \left( \frac{3x}{2} \right)$ is

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• In a triangle $ABC$ , $\frac{2\cos A}{a}+\frac{\cos B}{b}+\frac{2\cos C}{c}=$ $\frac{a}{bc}+\frac{b}{ca}$ , then the value of angle A is

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