SOLUTION: What is the reference of 5pi divided by 4? I cannot seem to figure it out.

Question 286551: What is the reference of 5pi divided by 4? I cannot seem to figure it out.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Since , this means that is in the 3rd quadrant. If you draw out the angle along with its associated triangle, you'll see that the reference angle is the angle that is closest to the origin. Since is the closest known angle, and , we know that we have to subtract from this angle to find the reference angle.

So which means that the reference angle is
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