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

Question 1025160: Express the complex number in trigonometric form.
-3i
Found 2 solutions by robertb, ikleyn:
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
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(52803) (Show Source): You can put this solution on YOUR website!
.
Express the complex number in trigonometric form.
-3i
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Trigonometric form is

.

The modulus should be positive real number.

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