00:01
Alright, cylindrical coordinates, so we need this phi, and that comes from the cone, okay? cone z is rho cosine of phi, and rho sine of phi, rho cancels out, so tangent phi is 1, phi is pi over 4.
00:22
Okay, so 0 to 2 pi is theta, all around, and phi is 0 to pi over 4, and rho is 0 to root 2, right? yeah, root 2.
00:49
And then right here we have rho square sine of phi, d rho, d phi, d theta.
01:02
Alright, cylindrical coordinates, okay, so let's break this apart.
01:11
0 to root 2, rho square d rho, and 0 to pi over 4, sine phi, d phi...