Question

de movries theorem of second year
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Answer 1

Answer:

De Moivre's theorem gives a formula for computing powers of complex numbers. We first gain some intuition for de Moivre's theorem by considering what happens when we multiply a complex number by itself.

Step-by-step explanation:

Using the polar form, any complex number z=a+ib can be represented as z =   r $( \cos \theta + i \sin \theta )$.

Absolute value:r=  

$r=\sqrt{a^+b^2}$

Argument θ subject to:  $cos\theta=\frac{a}{r} , sin\theta=\frac{b}{r}$