SOLUTION: 19pi/10 what is the acute reference angle?

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Question 692798: 19pi/10 what is the acute reference angle?
Answer by lwsshak3(11628) About Me  (Show Source):
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19pi/10 what is the acute reference angle?
This angle is 1/10 short of 2π or 20π/10
so the reference angle is π/10 in quadrant IV