trigonometry

Related Questions

• $\cos \frac{\pi }{5}\cos \frac{2\pi }{5}\cos \frac{4\pi }{5}\cos \frac{8\pi }{5}=$

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• The general value of $\theta $ in the equation $2\sqrt{3}\cos \theta =\tan \theta $, is

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• $\tan \frac{2\pi }{5}-\tan \frac{\pi }{15}-\sqrt{3}\tan \frac{2\pi }{5}\tan \frac{\pi }{15}$ is equal to

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• The value $\cos 105{}^\circ +\sin 105{}^\circ $is

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• A ladder 5 metre long leans against a vertical wall. The bottom of the ladder is 3 metre from the wall. If the bottom of the ladder is pulled 1 metre farther from the wall, how much does the top of the ladder slide down the wall

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