COMPLEX NUMBERS Polar Form Conversions (Page 10 of 11)

To find the imaginary part, repeat the last step but use menu option 8. The PtoRy command will give us the coefficient of i. Don't forget to add the degree symbol to the argument.

 2nd ANGLE key. Up arrow key. 8: menu selection. 3 Comma key. 150 2nd ANGLE key. 1: menu selection. Right parenthesis key. ENTER key. Calculator screen image.

Thus, the complex number 3cis150° has the approximate rectangular form -2.598 + 1.5i.
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