nevermind, figured it out. for anyone doing a similar problem here's my sol'n
Fxhinge=Tsin(theta)
Fy=0=Tcos(theta)-mg+Fyhinge
Fyhinge=mg-Tcos(theta)
Fxhinge squared + Fyhinge squared = F hinge squared
Homework Statement
A 35.8 kg beam is attached to a wall with a hinge and its far end is supported by a cable. The angle between the beam and the cable is 90°. If the beam is inclined at an angle of theta=17.8° with respect to horizontal, what is the horizontal component of the force exerted by...
http://postimage.org/image/gcb728073/
A=47.2 at 54.3deg above the x axis, B= 23.5 at 34.4 above the -x axis, C=30.5 along the -y axis.
A+B+C=(Ax+Bx+Cx)+(Ay+By+Cy) = R
R=√(Rx2+Ry2) = 22.63
θ=tan-1Ry/Rx = 68.9deg
I just thought of the possibility that c may be at 90 deg...