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Three positive charges are arranged as shown at the corners of a rectangle. Find the magnitude of the electric field at the fourth corner of the rectangle. The value of the Coulomb constant is 8.98755 x 10^9 N.m^2/C^2. Answer in units of N/C. What is the direction of this electric field (as an angle measured from the positive x-axis, within limits of -180 degree to 180 degree, with counterclockwise positive)? Answer in units of degree.

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