SOLUTION: Find the reference number for value of t. t = 4π/7 Please explain how this solved? I understand the types which have a lower denominator in which I can divide them and

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Question 919724: Find the reference number for value of t.
t = 4π/7
Please explain how this solved?
I understand the types which have a lower denominator in which I can divide them and the go along the unit circle to find the points. But with ones which have a higher denominator I am lost on.
Please explain
Thank you

Answer by rothauserc(4718)   (Show Source): You can put this solution on YOUR website!
the reference angle is 4pi/7, therefore the reference number is
7pi/7 - 4pi/7 = 3pi/7

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