Polar Form

polar → rectangular

x=rcosθ y=rsinθ

rectangular → polar

draw a triangle then find the angle and hypotenuse. then writ x=hypotenuse and y=angle in a coordinate as (x,y) or (hypotenuse, angle).

complex plane → polar

z=r(cosθ+isinθ)

complex plane → rectangular

convert to polar form and then multiply/condense the polar form equation.

what is polar mainly written as

(r,θ)

what is rectangular form mainly written as

(x,y)