<span>3 arcsin(-1) -3/2 arccos(√3/2)-7,5 arctg(-1/√3) = 3*(-</span>π/2<span>) -1,5*</span>π/6 +7,5*π/6 =
= - 3π/2 - π/4 +5π/4 = -1,5π +π = -0,5π
Решение задания смотри на фотографии
Arcsin1/2-3arcsin(-1/2)-2arccos(-1) = π/6 - 3*(-π/6) - 2π = π/6 + π/2 - 2π = -4π/3