Positive coterminal angle = 5π/4 + 2πn, n = positive integers Let n=1, so positive coterminal angle = 5π/4 + 2π = 13π/4 Negative coterminal angle = 5π/4 - 2πn, n = positive integers Let n=1, so negative coterminal angle = 5π/4 - 2π = -3π/4

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