00:01
We're asked to take the pythagorean theorem and solve it for b.
00:04
Well, if i'm going to solve this for b, what i need to do is move everything else to the right -hand side.
00:11
So what i would move first is my a -squared term.
00:14
To do that, i would subtract a -squared from both sides of the equation, because a -square -minus a -square will be zero, so they'll cancel out.
00:22
So now, on left -b -b -b squared, is equal to, well, c -squared minus a -squared, those aren't like terms, so i'll simply have c -squared minus a -squared.
00:31
Well, now, because b is getting squared, i can use the square root property.
00:35
So what i will do is i will take the square root of both sides...