Originally Posted by

**longshorts** ...

I have a triangle between the points H, E, S. I know the distances between all these points and the all the angles of the triangle. However I only know the (x,y) coordinates of H and S. Ultimately, I am trying to find the coordinates of E.

In order to do this I am trying to work out the intersection of two y = mx + c lines, HE and SE. I can work out the gradient (m) of HS as I have the coordinates of H and S, but how can I work out the gradient of both HE and SE presumably using the angles that I know in the triangle?

Also please note, these values are variable, so I cant work this out using a grid of some sort as I have no constant values.

Thanks in advance for any help.