Question

How do you evaluate tan(-7pi/6)?

Answer 1

Evaluate`tan ((-7pi)/6)`

Ans: `-sqrt3/3`

Explanation:

`tan ((-7pi)/6) = tan ((5pi)/6 - (12pi)/6) = tan ((5pi)/6 - 2pi) =`
`= tan ((5pi)/6) = -sqrt3/3` (Trig Table)