SOLUTION: Express the complex number in trigonometric form. -3i

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Question 1025160: Express the complex number in trigonometric form.
-3i
Found 2 solutions by robertb, ikleyn:
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
-3cos%28pi%2F2%29-3isin%28pi%2F2%29 is one such expression.


This expression is not in modulus form, and only one of an infinite number of equivalent forms. The problem doesn't specify -3i to be in written in modulus form, but only to be in TRIGONOMETRIC form.

Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!
.
Express the complex number in trigonometric form.
-3i
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Trigonometric form is

3%2A%28cos%283pi%2F2%29+%2B+i%2Asin%283pi%2F2%29%29.

The modulus should be positive real number.