W=(cos30°+tg30°)⁻³ cos30°=√3/2 tg30°=√3/3 W=(√3/2+√3/3)⁻³ W=(3√3/6+2√3/6)⁻³ W=(5√3/6)⁻³ W=(5√3/6)¹/³ W=⁶√(5/2)