Calculator for calculating the cosine of an angle
Enter the angle whose cosine is to be calculated and click the Calculate button. The unit of measurement for the angle can be switched between degrees and radians.
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The cosine of an angle corresponds to the ratio of adjacent to hypotenuse.
\(\displaystyle cos(α) = \frac{adjacent}{hypotenuse } = \frac{b}{c}\)
The function Cos calculates the cosine for an angle that is specified as a real number. The Cos function for calculating a complex number can be found here
The angle is given in degrees (full circle = 360 °) or radians (full circle = 2 · π). The unit of measure used is set to degrees or radians in the pull-down menu.
Cos returns a result in the range from -1 to 1.
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