Question 402099
Hi, please help me solve this problem:
Find the exact value of cot(390 degrees)
Thanks!

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The problem here is to determine the reference angle. Using the unit circle to illustrate this, starting from zero deg, rotate counter-clockwise 360 deg or 2pi radians plus an additional 30 deg, which is the reference angle. The cot of that angle, 30 deg, is the adjacent side/opposite side =sqrt(3)