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Cosine Calculators

cos
Result:

Inverse cosine calculator

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

cos-1
Result:

Cosine Calculator

It is an important trigonometric function. Cosine angle is equal to the length of the adjacent side of the triangle by the length of the hypotenuse of the triangle.

cos(α) = (length of adjacent of a triangle/length of the hypotenuse of a triangle) )

How to use cosine calculator?

To use cosine calculator you need to follow below steps.

1. Open Cosine Calculator.

2. Enter the cos value and select the angle as degree or radians.

3. Click on "Calculate" and get the result.