arccos(0)+arcsin (-1/2)-2arcsin (-1)+12arccos ( - корень из 3/2)

arccos (0) + arcsin (-1/2) - 2•arcsin (-1) + 12•arccos (-sqrt3/2) = π/2 + (-π/6) - 2•(-π/2) + 12•5π/6 = π/2 - π/6 + π + 10π = π/3 + 11π = 34π/3