Question

Express the complex number in trigonometric form.

3

Answer 1

\[\Large z=x+yi \\ \Large z=3 \]
Now the rest is only trigonometry in the xy-Plane.

Answer 2

it is just another way of writing 3
since \(\cos(0)=1\) and \(\sin(0)=0\) you have
\[3\left(\cos(0)+i\sin(0)\right)=3\]

Answer 3

Thank you !

Answer 4

Now what if instead of 3 it's like 2i ?

Answer 5

sorry i didn't know someone else was answering