(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the magnitude of the vector that is the sum of the three vectors , , and in the figure : figure is the link

http://imageshack.us/photo/my-images/14/yf0134.jpg/

2. Relevant equations

3. The attempt at a solution

What I did was obtain A_{x}=0 B_{x}=7.5

A_{y}=-8.00 and B_{13}

My problem came when trying to get C_{x}and C_{y}.

The way the vector is placed in the figure confuses me but I got C_{y}= 12sin(25)= -10.87 since it is on the negative side, and C_{x}= 12Cos25=-5.07.

I then got the squareroot of A_{x}+B_{x}+C_{x}^2+A_{y}+B_{y}+C_{y}^2

Did I create the triangle wrong? If so how can I make sure to not make this same mistake

**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!

# Find the magniture of the vector using the figure below

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