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What is the difference between 2 cos x and cos 2x? |
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Answer» 2 cosx is twice the cosine of angle x and lies in the range of [-2 , 2] whereas, cos 2x is the cosine of the angle 2x, two times the angle x and itlies between [-1 , 1]. The cosine function is one of the primary mathematical trigonometric functions. It is complementary to the cosine function (co + cosine) |
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