Put all unit circles away and prepare to take the “Unit Circle Quiz.”

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Presentation transcript:

Put all unit circles away and prepare to take the “Unit Circle Quiz.” Students, Take out your calendar and your homework. Take out your spiral notebook and Complete the DNA. Use your notes if necessary. Put all unit circles away and prepare to take the “Unit Circle Quiz.”

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Trigonometric Values of Common Angles Unit Circle x y (0, 1) 90° 120° 60° 135° 45° 30° 150° (–1, 0) 180° (1, 0) 0° 360° 210° 330° 315° 225° 240° 300° (0, –1) 270° Trigonometric Values of Common Angles

y x

Definitions of Trig Functions of Any Angle

Reference Angle Let θ be an angle in standard position. Its reference angle is the acute angle θ´ formed by the terminal side of θ and the horizontal axis.

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