I have a problem where I need to find the net electric field on a point due to 6 charges. I attached the diagram. It is a pentagon of 5 charges with a 6th charge in the center. Each side of the pentagon is 4 mm, and there is a point P on the center of one side. I found that the line from point P to point 1 of the pentagon is 4.99mm, using the law of cosines. I need to figure out what the angle is at point P from the line to the side of the pentagon (the one I marked with a question mark), so I can find the x and y components of this line. I am not sure if the line bisects the 54° angle at point 1. Can someone help me with this?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks a lot. I really appreciate it.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electic field question - geometry

**Physics Forums | Science Articles, Homework Help, Discussion**