I think in precalculus at least, something like this is not too hard to show and explain to a student. This would be a fine “final” thing to end the typical high school math career on - showing how all of the different concepts you’ve explored come together.
I agree. Although better and more illustrative videos have since been made on YouTube, my favorite introduction to the square root of negative one is Chapter 22 of the Feynman Lectures on Physics Vol. I
Feynman has so much great stuff to plagiarize.
I think in precalculus at least, something like this is not too hard to show and explain to a student. This would be a fine “final” thing to end the typical high school math career on - showing how all of the different concepts you’ve explored come together.