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meerkat18

13 pi over 6 is equivalent to 390 degrees. This is a first quadrant degree angle. The reference angle is the supplementary angle of the angle given. The reference angle is equal to the didifferencef 3 pi and 13 pi over 6. This is equal to 5 pi over 6. 

Answer:

The reference angle is π/6 radians

Step-by-step explanation:

The reference angle is the angle that the given angle makes with the x-axis. In order to find a reference angle you have to subtract 2π to your angle (notice that your angle, 13/6 π, is greater than 2π).

13/6 π - 2π = 1/6 π or π/6 radians

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