(part 1 of 2) Determine two coterminal angles (one posi- tive and one negative) for a) 120° 1. 480° and -240° 2. 480° and -60° 3. 480° and -420° 4. 220° and -420° 5. 220° and -240° b) -420° (part 2 of 2) 0= 120° 0=-420°

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