# Polar system in AC negative angle

#### michgkou

Joined Oct 3, 2019
37
If I have an ac circuit and I found that an I=3.1∠-142° [A], that means the direction of the current is opposite ? This I=3.1∠(180-142)°=I=3.1∠38° ?

Am I right?

Thanks

#### MrChips

Joined Oct 2, 2009
19,406
My guess is it would be 360-142°.

If you use 180-142° you would have to change the sign, i.e. I = -3.1∠38°