How do you evaluate cot((2pi)/3)?

2 Answers
Apr 4, 2016

1.402

Explanation:

Evaluate (2pi)/3 where pi = 180^o, which gives a value of 120^o.

Also know that cot = 1/tan.

Therefore,

cot((2pi)/3) = 1/(tan(120)) = 1/0.713 = 1.402

Apr 5, 2016

- sqrt3/3

Explanation:

Trig table --> tan ((2pi)/3) = - sqrt3
Therefor,
cot ((2pi)/3) = 1/(tan) = - 1/sqrt3 = - sqrt3/3