# Reference Angles and Angles in the Unit Circle

## Formed between the terminal side of an angle and the closest part of the x-axis.

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## Reference Angles and Angles in the Unit Circle

by CK-12 //at grade
Definition of reference angle shown on the unit circle
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## Exploring Reference Angles

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Reference Angles and Angles in the Unit Circle Interactive
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## Determining Trig Function Values Using Reference Angles and Reference Triangles

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Uses reference angles and reference triangles to determine the values of the 6 trigonometric functions.
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