Three point charges, q1 = 7.1 C, q2 = 0.02 C, and q3 = 9.21 C, are arranged as illustrated in the diagram below, with = 15 deg. Let E be the electric field at the location of q3, due to charges q1 and q2. What angle (in degrees) does E make with respect to the x axis (anglesabovex axis are positive, and below theair are negative)?

Correct answer is 17.30 degree. Please show calculations.