5.1: Angles - Mathematics LibreTexts
https://math.libretexts.org/Courses/Monroe_Community_College/MTH_165_College_Algebra_MTH_175_Precalculus/05%3A_Trigonometric_Functions_and_Graphs/5.01%3A_Angles
Web ResultFor instance, an angle in standard position whose terminal side lies in Quadrant I is called a `Quadrant I angle' or 'an angle in Quadrant I'. If the terminal side of an angle lies on one of the coordinate axes, it is called a quadrantal angle. Two angles in standard position are called coterminal if they share the same terminal side.
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