trigonometry

Related Questions

• If a flagstaff of 6 metres high placed on the top of a tower throws a shadow of $2\sqrt{3}\,metres$ along the ground, then the angle (in degrees) that the sun makes with the ground is

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• If $\tan \frac{\theta }{2}=t,$then $\frac{1-{{t}^{2}}}{1+{{t}^{2}}}$is equal to

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• If $\tan \theta =-\frac{1}{\sqrt{10}}$and $\theta $ lies in the fourth quadrant, then $\cos \theta =$

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• $\cos ^4 \frac{\pi}{8} + \cos ^4 \frac{3 \pi}{8} + \cos ^4 \frac{5 \pi}{8} + \cos ^4 \frac{7 \pi}{8} =$

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• The maximum value of $4{{\sin }^{2}}x+3{{\cos }^{2}}x$ is

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