Lemma
MediumUnit circle
OpenStax, Algebra and Trigonometry 2e §7.3 Unit Circle · Exercise 7 · Trigonometry · Unit circle

Unit Circle · Exercise 7

Use the given sign of the sine and cosine functions to find the quadrant in which the terminal point determined by lies.

and

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OpenStax, Algebra and Trigonometry 2e · §7.3 Unit Circle · Exercise 7

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