# Question #2c948

##### 1 Answer

Feb 26, 2017

See below.

#### Explanation:

Easiest way, Euler's Formula:

Expanding that out....

Comparing real and imaginary terms in

Ta-da!!

Feb 26, 2017

See below.

Easiest way, Euler's Formula:

Expanding that out....

Comparing real and imaginary terms in

Ta-da!!