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posted by Jenn Saturday, April 7, 2012 at 2:44pm.

Find the co terminal angle for 15pi/4

15π/4 = 675° which is co-terminal with 675-360 or 315° or 7π/4 notice that 15π/4 - 2π = 7π/4

Nonnegative coterminal is (pi)/4 Negative coterminal is -(pi)/4

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