trigonometry

Related Questions

• If $2\sin \theta +\tan \theta =0$, then the general values of $\theta $ are

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• The angular elevation of a tower CD at a point A due south of it is 60° and at a point B due west of A, the elevation is 30o. If AB = 3 km, the height of the tower is

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• $\cos 15{}^\circ =$

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• If $\frac{\pi }{2}<\alpha <\pi ,\,\text{ }\pi <\beta <\frac{3\pi }{2};$ $\sin \alpha =\frac{15}{17}$ and $\tan \beta =\frac{12}{5}$, then the value of $\sin (\beta -\alpha )$ is

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• $\sin 12{}^\circ \sin 48{}^\circ \sin 54{}^\circ =$

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