# Thread: Can Anyone Solve this tough Algebra Problem?

1. ## Can Anyone Solve this tough Algebra Problem?

Solve for Unknowns of x1, x2, x3, x4

-0.301Sin(x1)-0.501Sin(x1+x2)+0.08507Cos(x4)+0.315Cos(x4)= -0.4015
0.301Cos(x1)+0.501Cos(x1+x2)-0.08507Sin(x4)-0.315Sin(x4)= -0.3015
-0.08507Cos(62.8+x4)+0.501Sin(x1+x3)-0.501Sin(x1+x2)+0.08507Cos(x4)=0
0.08507Sin(62.8+x4)-0.501Cos(x1+x3)+0.501Cos(x1+x2)-0.08507Sin(x4)=0

Any hints or help to solve this problem is greatly appreciated.

Thanks,
Kaushik

2. Originally Posted by kaushikmechano
Solve for Unknowns of x1, x2, x3, x4

-0.301Sin(x1)-0.501Sin(x1+x2)+0.08507Cos(x4)+0.315Cos(x4)= -0.4015
0.301Cos(x1)+0.501Cos(x1+x2)-0.08507Sin(x4)-0.315Sin(x4)= -0.3015
-0.08507Cos(62.8+x4)+0.501Sin(x1+x3)-0.501Sin(x1+x2)+0.08507Cos(x4)=0
0.08507Sin(62.8+x4)-0.501Cos(x1+x3)+0.501Cos(x1+x2)-0.08507Sin(x4)=0

Any hints or help to solve this problem is greatly appreciated.

Thanks,
Kaushik
Solve it using technology.

3. Originally Posted by mr fantastic
Solve it using technology.
I've always wondered about that phrase. Aren't paper and pencil "technology"? They don't grow on trees, they have to be manufactured!

4. Originally Posted by HallsofIvy
I've always wondered about that phrase. Aren't paper and pencil "technology"? They don't grow on trees, they have to be manufactured!
I guess I should have specified silicon chip technology rather than wood chip technology.