Question

What is `cot ((-11pi)/3)`?

Answer 1

`sqrt3/3`

Explanation:

Trig table of special arcs, and unit circle -->
`cot ((-11pi)/3) = cos (pi/3 - (12pi)/3) = cot (pi/3 - 4pi) =`
`= cot (pi/3) = sqrt3/3`