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## Homework Statement

Two identical point charges, q1 = +2.5 x 10-6 C and q2 = +2.5 x 10-6 C, are placed as shown in the diagram below. Point P is a distance 0.05 m from q1 and 0.12 m from q2, such that the angle at P is 90 degrees. Calculate the magnitude of the Electric field E at point P.

## Homework Equations

E = k x Q / r^2

This plus vector which I suck at.

## The Attempt at a Solution

So I have created the diagram and I believe I have to use the second formula twice, along with some trigonometry, but I'm not sure.

E1 = k x Q1 / r^2

E1 = k x +2.5 x 10^-6 / 0.05^2

E1 = 9 x 10^6

E2 = k x Q2 / r^2

E2 = k x +2.5 x 10^-6 / 0.12^2

E2 = 1.563 x 10^6

I Can't do vectors at all. Please help.