Ex: Find the Square Root of a Complex Number (DeMoivre's Theorem)

This video explains how to find the square root of a complex number using DeMoivre's Theorem.

[gloystar]

Don't forget the negative square root as well because every complex number has two complex square roots ±(x + iy). In your case, it will be the negative version of your answer (-0.55 - 1.82 i). You can verify it by squaring it, and it will still give (-3 + 2 i).

[anthonyatienza]

It really helps when you say that the calculator should be in radians to use inverse tan

[quizkallie]

While changing to radian mode when finding theta since the answers should be in degrees?

[kmo]

how did you get 1/2 for the power of z. Basically how did you get n.

[DJCheeseburgers]

You said n=(1/2) but I believe n = 2 in this case