Coordinate (1,-2), angle of intersection thru origin?


by bchandler
Tags: angle, coordinate, intersection, origin
bchandler
bchandler is offline
#1
Oct17-08, 05:09 PM
P: 16
I'm trying to do a simple electric field due to point charges problem, but I'm stuck on a very simple detail. There are a number of point charges on an xy plane, and one of the point charges is at the cooridinate (1,-2). I need to figure out which angle a line drawn from this point to the origin would make with the x axis to do the problem, but can't figure it out! I'm sure as soon as someone tells me the answer I'll remember how to find it; it's just a simple geometry problem!

Can anyone help? I can do the rest of the problem, its just this one snag that has me held up.
Phys.Org News Partner Science news on Phys.org
Lemurs match scent of a friend to sound of her voice
Repeated self-healing now possible in composite materials
'Heartbleed' fix may slow Web performance
bchandler
bchandler is offline
#2
Oct17-08, 05:13 PM
P: 16
Nevermind, I figured it out. I just set up a triangle along the axes to figure out the angle and the distance. Should have thought about this one more... Feel free to delete mods...


Register to reply

Related Discussions
Coordinate transformation and choice of a suitable coordinate system. Special & General Relativity 2
Moving a coordinate system around a sphere where z axis pointing to sphere origin. Engineering, Comp Sci, & Technology Homework 1
Angle of Intersection of Space Curves Calculus & Beyond Homework 12
How does the angle at which a ray of light strikes a prism compare with the angle at Introductory Physics Homework 9
How to find angle of a curve in xy coordinate plane? General Math 5