Question

Express the complex number in trigonometric form.

2i

help me please

Answer 1

2i=|z|(cos(alpha)+i*sin(alpha))=2(cos(pi/2)+isin(pi/2)) is a trigonometric form of the complex number (the answer is the same for cases when a polar angle ranges from -pi to pi and when a polar angle ranges from 0 to 2*pi).