=2.828/_-45 <<----polar form
=2/_-30 <<----- polar form
The polar form that lanzailan gives is r and the angle (in degrees). For problems like this it is better to give the angle in radians: These complex numbers can be written as , , or, equivalently, and .
To find the product of two complex numbers, in complex form, you multiply the moduli (r values) and add the angles. To divide, divide the moduli and subtract the angles.