Really simple system of equations

[yoleven]

Homework Statement

1. 2500-Tac cos $$\Phi=0$$
2. Tac sin$$\Phi-500=0$$

Homework Equations

The Attempt at a Solution

I have 2 equations. I need to solve for $$\Phi$$ to get Tac. I have got to the point of :
Tac=500/sin$$\Phi$$
2500-500/sin$$\Phi*(cos\Phi)=0$$

after this i can't go any further

I am looking at the solution of 11.31°. But I need to solve to get it.

 

[tiny-tim]

I have got to the point of :
Tac=500/sin$$\Phi$$
2500-500/sin$$\Phi*(cos\Phi)=0$$

after this i can't go any further

I am looking at the solution of 11.31°. But I need to solve to get it.

Hi yoleven!

(have a phi: φ )

Your second line should be 2500 - 500cosφ/sinφ = 0.