Question

Rewrite the complex number -3 +4i into trigonometric form. Give the argument, theta, to the nearest degree.

Answer 1

\[z = \cos(\theta) +isin(\theta)\]use De Moivre's theorem,
where z = x+iy
first find the argument and modulus of the complex number and the angle then plug it into

Answer 2

\[r = 5, \theta = 126.87^o\]\[z = r(\cos(\theta) + isin(\theta))\]