Online Cosine Calculator

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Cosine Calculator

In order to calculate cos(x) on the calculator:

Enter the input angle. Select angle type of degrees (°) or radians (rad) in the combo box. Press the = button to calculate the result.

cos
Result:

Inverse cosine calculator

Enter the cosine value, select degrees (°) or radians (rad) and press the =  button:

cos-1
Result: