# math

posted by
**John**
.

u=(2 cos pi/4)i + (2 sin pi/4)j, v = (cos 3pi/2)i + (sin 3pi/2)j

find the angle theta between the two

I'm at a lost on what to do.

posted by
**John**
.

u=(2 cos pi/4)i + (2 sin pi/4)j, v = (cos 3pi/2)i + (sin 3pi/2)j

find the angle theta between the two

I'm at a lost on what to do.