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R is the resultant of three forces

**A,B,C**that is

**R = A+B+C**

If

**A**= A<210,

**B**=200 < Theta,

**C**=200 <65, and

**R**= 250 <125, use the component method to determine A and Theta.

ok so I broke them into their components and now I have no idea how to find A and Theta

Ax = A cos 30

Ay = A sin 30

Bx = 200 cos Theta or possibly could be 200 sin Theta

By = 200 sin Theta or 200 cos Theta

Cx=200 cos 65

Cy = 200 sin 65

Rx = 250 sin 35

Ry = 250 cos 35

A cos 30 + 200 cos Theta + 200 cos 65 = 250 sin 35

A sin 30 + 200 sin Theta + 200 sin 65 = 250 cos 35

would this be the correct approach? How in the world would you solve for A or Theta?