a) Find one positive and one negative coterminal angle to each of the following: b) 509
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For 120°, the reference angle is 60° (since 120° - 90° = 30°, and 30° is the complement of 60°). Since 120° is in the second quadrant (where x is negative and y is positive), the terminal angle is 180° - 60° = 120°. Show more…
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