Question

Express the complex number in trigonometric form.

3

Answer 1

Answer choices:

3(cos 0° + i sin 0°)

3(cos 90° + i sin 90°)

3(cos 180° + i sin 180°)

3(cos 270° + i sin 270°)

Answer 2

Do you think you could help, @Hero?

Answer 3

I was thinking it was either 0 or 180 because it doesn't have the imaginary component...

Answer 4

\(\cos(0)=1\) and \(\sin(0)=0\) so
\[3=3\left(\cos(0)+i\sin(0)\right)\]