trigonometry

Related Questions

• If in a triangle $ABC,$ $\cos A\cos B+\sin A\sin B\sin C=1,$ then the sides are proportional to

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• An observer on the top of a tree, finds the angle of depression of a car moving towards the tree to be 30°. After 3 minutes this angle becomes 60°. After how much more time, the car will reach the tree

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• The expression $\frac{\cos 6x+6\cos 4x+15\cos 2x+10}{\cos 5x+5\cos 3x+10\cos x}$ is equal to

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• The shadow of a tower standing on a level ground is found to be 60 m longer when the sun's altitude is 30° than when it is 45°. The height of the tower is

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