Step by Step Solver Calculator to Find the Coterminal
and Reference Angles to a Given Angle

1) A coterminal angle is another angle that has the same terminal side as the given angle.
reference angle $\theta_r$ is the acute angle made by the x-axis and the terminal side of the given angle.
Solve each step below then click on "Show me" to check your answer. There is a graph at the bottom of the page that helps you further understand graphically the solution to the question shown below.

Step by step solution

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