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Arccosine Calculator

This calculator calculates arcsine, arccosine, arctangent, arccotangent, arcsecant and arccosecant and will determine the angle value in both degree and radian measure.









Reference material

What is Arccosine

The arccosine (arccos (x)) of the number x, is the angle α given in radian measure, such that cos α = x.
Calculate arccosine means to find an angle α whose cosine is equal to the number x.

Range (in radians and degrees):
0 ≤ α ≤ π
0° ≤ α ≤ 180°

Domain:
−1 ≤ x ≤ 1

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