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15) Find one positive and one negative coterminal angle to 87°

User Alex Logan
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To find a positive coterminal angle to 87°, we can add or subtract multiples of 360°. Adding 360° to 87° gives us 447°, which is a positive coterminal angle.

To find a negative coterminal angle, we can subtract multiples of 360°. Subtracting 360° from 87° gives us -273°, which is a negative coterminal angle.
User Jeanann
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