1. Which of the angles are coterminal? π/4, 3π/4, -7π/4 ?
2. Find 1 positive angle and 1 negative angle that are coterminal with the given angle? - 5π/6
1 -7pi/4 = pi/4 - 8pi/4 = pi/4 -2pi and it is coterminal with pi/4
2 add 12pi/6 for the positive angle 7pi/6
subtract 12pi/6 for the negative -17pi/6
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Answers & Comments
1 -7pi/4 = pi/4 - 8pi/4 = pi/4 -2pi and it is coterminal with pi/4
2 add 12pi/6 for the positive angle 7pi/6
subtract 12pi/6 for the negative -17pi/6