Question

In rectangular form, 6(cos120°, isin120°)

Answer 1

(-3, 3√3)

Explanation:

Evaluate each of the coordinates. Keep or drop the "i" as your convention requires.

6(cos(120°), i·sin(120°)) = (6·cos(120°), i·6·sin(120°)) = (6(-0.5), i·6·√3/2)

= (-3, 3√3 i)

You may want the (x, y) coordinates written as (-3, 3√3).

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In the complex plane, this is -3+i·3√3.