When do you put +k.pi and when +2pi.k?

1 Answer
Apr 8, 2018

For the sin and cos functions, add 2kpi
Exp: cos x = 1/2cosx=12
x = pi/3 + 2kpix=π3+2kπ
For the tan and cot functions, add pi.
Exp: tan x = sqrt3tanx=3
x = pi/6 + kpix=π6+kπ