Lemma
EasyAngle measure
OpenStax, Algebra and Trigonometry 2e §7.1 Angles · Try It 7 · Trigonometry · Angle measure

Angles · Try It 7

Find an angle of measure that is coterminal with an angle of measure where

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OpenStax, Algebra and Trigonometry 2e · §7.1 Angles · Try It 7

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Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.

Checked against the answer in OpenStax, Algebra and Trigonometry 2e.