A 25.0?C point charge lies at the origin. Part A Find the electric field at the

Question

A 25.0?C point charge lies at the origin. Part A Find the electric field at the point (0.65m , 0). What is the magnitude of the electric field? Express your answers using two significant figures. Enter the x and y components of the field separated by a comma. Answer is 5.3 *10^5 N/C Part B is what I need help with please. Find the electric field at the point (1.15m , 0.85m ). Express your answers using two significant figures. Enter the x and y components of the field separated by a comma. I need to find Ex and Ey. I am not sure what I am doing wrong. I am getting 1.57 *10^5 N/C for the hypotenuse. and using the angle 36.469 to try and find Ex and Ey. By multipling 1.57*10^5cos36.469 and then sin. But not getting the right answer for some reason.
Thanks if you can figure out what my problem is. A 25.0?C point charge lies at the origin. Part A Find the electric field at the point (0.65m , 0). What is the magnitude of the electric field? Express your answers using two significant figures. Enter the x and y components of the field separated by a comma. Answer is 5.3 *10^5 N/C Part B is what I need help with please. Find the electric field at the point (1.15m , 0.85m ). Express your answers using two significant figures. Enter the x and y components of the field separated by a comma. I need to find Ex and Ey. I am not sure what I am doing wrong. I am getting 1.57 *10^5 N/C for the hypotenuse. and using the angle 36.469 to try and find Ex and Ey. By multipling 1.57*10^5cos36.469 and then sin. But not getting the right answer for some reason.
Thanks if you can figure out what my problem is. Find the electric field at the point (1.15m , 0.85m ). Express your answers using two significant figures. Enter the x and y components of the field separated by a comma. I need to find Ex and Ey. I am not sure what I am doing wrong. I am getting 1.57 *10^5 N/C for the hypotenuse. and using the angle 36.469 to try and find Ex and Ey. By multipling 1.57*10^5cos36.469 and then sin. But not getting the right answer for some reason.
Thanks if you can figure out what my problem is.

Explanation / Answer

Ex=kq/x^2 *costheta

=9*10^9*25*10^-6*1.15/(1.15^2+0.85^2)^1.5

=8.85*10^4 N/C

Ey=kq/x^2 *sin theta

=9*10^9*25*10^-6*0.85/(1.15^2+0.85^2)^1.5

=6.54*10^4 N/C

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