trigonometry

Related Questions

• If $x=\cos 10{}^\circ \cos 20{}^\circ \cos 40{}^\circ ,$then the value of $x$ is

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• If $\sin A=\sin B$and $\cos A=\cos B,$then

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• If $\cos \theta +\sec \theta =\frac{5}{2}$, then the general value of $\theta $is

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• $\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=$

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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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