Question 1141888
 
Because it allows you to use rules of exponents 

For example, to find {{{ (6+7i)^5 }}}  you could multiply it out using rectangular form, but it is much easier to find  {{{ (9.2195*e^(0.862i) )^5 }}}<br>

because {{{ ( r*e^(i*theta) )^n = r^n*e^(i*theta*n) }}}