Vocabulary Words

By: Hannah Popp

Radians: an angle made at the center of the circle by an arc whose length is the same as the radius.

Degrees: a measure of angles

Initial side: The ray where measurements of an angle starts.

Terminal Side: The ray where measurements of an angle stops.

Coterminal Angle: Angles which share a terminal side

Reference Angle: Is the smallest angle between the terminal side and the x-axis

Unit Circle: Circle with a radius of 1

Trig Ratios: Functions used to calculate the missing length of a triangle

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