3. Unit Circle
Defining the Unit Circle
Problem 20
Textbook Question
Textbook QuestionIn Exercises 19–24, a. Use the unit circle shown for Exercises 5–18 to find the value of the trigonometric function. b. Use even and odd properties of trigonometric functions and your answer from part (a) to find the value of the same trigonometric function at the indicated real number. cos 𝜋/3
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