Electrical engineering - AC analysis intro 2

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-ac-analysis/v/ee-ac-analysis-intro2 Here's a preview of how AC analysis is going to work. To get ready we need to review some of the ideas from trig and complex numbers.