Evaluate in the domain of complex variables.
a) [3(cos〖55°〗+j sin〖55°〗 )]^2 b) (5.0/15°)^3
c) (52/42°)^(1/2) d) ∜4
a) [3(cos〖55°〗+j sin〖55°〗 )]^2 b) (5.0/15°)^3
c) (52/42°)^(1/2) d) ∜4