1)2cos x = √3 2)tg x =√3 3)ctg=√3

1) 2cosx=√3 cosx=√3/2 x=+-arccos√3/2+2Πn, n€Z x=+-Π/6+2Πn, n€Z 2) tgx=√3 x=arctg√3+Πm, m€Z x=Π/3+Πm, m€Z 3) ctgx=√3 x=arcctg√3+Πk, k€Z x=Π/6+Πk, k€Z