Объяснение:
N1
а) 2arctg(-1) + arccos(sqrt(3)/2) + arcsin(-1) = -2arctg(1) + arccos(sqrt(3)/2) - arcsin(1) = -π/2 + π/6 -π/2 = -π + π/6 = -5π/6
б) 48 + 1,5 = 49,5
в) 2^log2 (2) = 2^1 = 2
