I have a vector $v = 7j$ and a vector $u$ with a length of 5 that starts at the origin and rotates in the $xy$-plane.
How am I supposed to find the max value of the length of the vector $|u \times v|$ ?
I figured the equations is $|u \times v| = |u|\cdot|v| \sin(t)$ but don't know where I am supposed to go from there.