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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• The number of values of $\theta $ in $[0, 2\pi ]$ satisfying the equation $2{{\sin }^{2}}\theta =4+3 \cos \theta $ are

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• The equation ${{\sec }^{2}}\theta =\frac{4xy}{{{(x+y)}^{2}}}$is only possible when

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• If $\sin (\theta +\alpha )=a$ and $\sin (\theta +\beta )=b,$ then $\cos 2\,(\alpha -\beta )-4ab\,\cos (\alpha -\beta )$ is equal to

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• If $\cot \theta +\tan \theta =2\text{cosec}\theta $, the general value of $\theta $ is

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