# Shared Flashcard Set

## Details

Unit 11 - The Circular Functions
math
5
Mathematics
04/09/2021

Term
 Standard Position
Definition
 An angle is in standard position if its vertex is located at the origin, and its initial side extends along the positive x-axis.
Term
 Positive and Negative Angles
Definition
 If an angle is generated by a counter-clockwise rotation, we call angle a positive angle. On the other hand, if an angle is generated by a clockwise rotation we call angle a negative angle.   [image]
Term
 Reference Angles
Definition
 The reference angle is the angle that the given angle makes with the x-axis. Regardless of where the angle ends (that is, regardless of the location of the terminal side of the angle), the reference angle measures the closest distance of that terminal side to the x-axis.   [image]
Term
 coterminal angles
Definition
 Coterminal angles: are angles in standard position (angles with the initial side on the positive x-axis) that have a common terminal side. For example, the angles 30°, –330° and 390° are all coterminal   [image]
Term
 vertex of an angle
Definition
 The vertex of an angle is the point where two rays begin or meet [image]
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