# How do you evaluate # e^( ( 3 pi)/8 i) - e^( ( 19 pi)/6 i)# using trigonometric functions?

##### 1 Answer

Apr 9, 2016

#### Explanation:

According to Euler's formula,

Using values for

Putting these two values together,

You can check the trigonometric values, there's a margin for error with rounding (or if I've accidentally done radians rather than degrees or vice versa on a calculator) but the equation is correct. Simply use Euler's formula, enter your values for