Simultaneous Trig Equations

1. Jun 3, 2009

djdato

1. The problem statement, all variables and given/known data
I was working on a tension problem where a bar is supported by 2 cables at different angles.
I found the x and y vector components, but then got stuck at the simultaneous equations part.

2. Relevant equations
These are the equations i ended up with.

-T1sin(20) + T2sin(30) = 0
T1cos(20) + T2cos(30) = 9800

2. Jun 3, 2009

Physics_Math

Well it just seems like solving a simple linear system:

T1 = T2*sin(30)/sin(20)

Then just substitute that into the second equation and solve for T2. Then solve for T1.

3. Jun 4, 2009

djdato

haha. Yep, thanks, i saw how simple it was too late :P