12:50 is wrong. A semi-minor axis could not be longer than a semi-major axis. "a" and "b" represent the x and y axes, respectively. If a > b, then the major axis is the x-axis (if the center is at the origin); and if b > a, then the y-axis is the major axis (center at origin).
Good morning, Sir Gon. I would like to share this video with my classmates for us to better understand our lesson ELLIPSE. Can I have your permission sir. Thank you.
Halimbawa ung a=10 so magiging syang 2a=2(10) =20 (length of major axis),,pag hinahanap naman ung length ng semi-major,, 10 lang length niya Pag length of minor axis naman ang hinahanap ganon din pero 2b naman ung formula:)