Question

Hi, so i've been trying to solve this problem for a while and I can't seem to find the correct answer, I was wondering if you would be able to help

The question is: two long, straight wires carry currents I1 = 8 A (into the page) and I2= 12 A (out of page) are placed at two corners of a right triangle, shown in the figure below. Find the magnitude of the net magnetic field at point P (third corner of the right triangle). https://s3.amazonaws.com/lightcat-files/chatimages/JgYgMMMUReWbwXIrKAVPIMG_3764.JPG if you can provide a detailed explanation of how to get the answer that would be amazing!!