SOLUTION: Can you walk me through the process of answering this question. compute the cot(31Pi/12)

Question 396492: Can you walk me through the process of answering this question.
compute the cot(31Pi/12)
Found 2 solutions by stanbon, richard1234:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
compute the cot(31Pi/12)
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Comment: 2pi can ways be removed from the angle
and still get the same function value.
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(31/12)pi = (24/12 + 7/12)pi = (7/12)pi
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cot[(7/12)pi] = -0.267949..
===========================
Cheers,
Stan H.
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Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Since all coterminal angles have the same trig values, we can subtract 2pi, so:

You can compute without using a calculator, using the addition formula , and letting , . You can then substitute those values in. I don't have enough time now, so I'll have you give it a try! Don't forget to invert your answer since you're looking for the cotangent, not the tangent.
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