Question

Вычислить ctg 19 пи/6

Answer 1

Ctg (19pi/6 ) = ctg (2pi + 7pi/6) = ctg (7pi/6) = ctg (pi + pi/6)  = ctg (pi/6) = √3

Answer 2

ctg(19π/6) = 1/tan(19π/6) = 1/tan(π/6) = 1/√3

Таким образом, ctg(19π/6) = 1/√3