Point M is located a distance 2d from the midpoint between the two wires. Find the magnitude of the magnetic field created at point M by wire 1.<---Already did; answer was B_1M = ((u_0)I)/(2sqrt(5)pi*d)
I have to do this:
Find the magnitude of the net magnetic field B_M created at point M by both wires.
B(wire) = ((u_0)I)/(2pi*d)
The Attempt at a Solution
I already found the angle to be 63.4 degrees, resulting in
B_M = 2*cos(63.4)((u_0)I/2pi*sqrt(d^2+(2d^2))),
but the system said that I had an incorrect multiplier...
What am I doing wrong?