Question

2 . [ cos 30° + i sen 30°] . 3 [ cos 90° + i sen 90°]

Answer 1

lzl (Cos ☺+ iSen☺) = lzl e^i☺

☺: radianes

 

2 . [ cos 30° + i sen 30°] . 3 [ cos 90° + i sen 90°]

2 . e^î pi/6 . 3 . e^î pi/2

6 . e^2pi/3

6 . ( cos 2pi/3 + iSen 2pi/3)

6 . (  -1/2  +  i (- raíz3)/2 )

-3 + i3raíz3