What is the trigonometric form of $(- 8 + 2 i)$ $(-8+2i)$ ?

Question

2286 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-11T21:28:14

I found: $z = 8.25 [cos ({165.93}^{\circ}) + i sin ({165.93}^{\circ})]$ $z=8.25[cos(165.93^@)+isin(165.93^@)]$

I usually plot the complex number on the complex plane:
enter image source here

What is the trigonometric form of (−8+2i) (-8+2i) ?