Find Coterminal Angles - Trigonometry Calculator

A calculator to find the exact value of a coterminal angle to a given trigonometric angle. Since there are an infinite number of coterminal angles, this calculator finds the one whose size is between 0 and 360 degrees or between 0 and 2π depending on the unit of the given angle.

How to use the calculator 1 - Enter the angle:

  • in Degrees input. example 745

  • in Radians input, enter angle as a fraction of π: example 12π/5
then press the button "enter".

Enter Angle in Degrees

Coterminal Angle in Degrees [0 - 360 degrees)


Enter Angle in Radians


Coterminal Angle in Radians [0 - 2π)


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Find the coterminal angle, an analytical tutorial.

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Updated: February 2015

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