I was not aware that the cosine function was in fashion!
The range, on the other hand, is [-1, 1].
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The differential of the sine function is the cosine function while the differential of the cosine function is the negative of the sine function.
Inverse of Cosine is 'ArcCos' or Cos^(-1) The reciprocal of Cosine is !/ Cosine = Secant.
The argument of the cosine function must be (2pi/3)*x radians
Tangent = sine/cosine provided that cosine is non-zero. When cosine is 0, then tangent is undefined.
The inverse of the cosine function is arcosine. The domain is −1 ≤ x ≤ 1 since the range of the cosine function is from -1 to 1. The range is from 0 to pi radians or 0 to 180 degrees.