SOLUTION: how do i find the reference angle for 13pi/12 is it 195??

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Question 595574: how do i find the reference angle for 13pi/12 is it 195??
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Think in radians.

13pi/12 is just pi/12 more than pi. Since the trig functions are mostly the same upon adding pi (except some negative signs) use pi/12 as a reference angle.