(Solved): The guy wires AB and AC are attached to the top of the transmission tower. The tension in cable ...

The guy wires $AB$ and $AC$ are attached to the top of the transmission tower. The tension in cable $AB$ is $9.0\mathrm{kN}$. Determine the required tension $T$ in cable $AC$ such that the net effect of the two cables is a downward force at point $A$. Determine the magnitude $R$ of this downward force. Assume $a=39\mathrm{m},b=45\mathrm{m},c=19\mathrm{m}$, and $d=31\mathrm{m}$. Answers: $\begin{array}{ll}T=& \mathrm{kN}\\ R=& \mathrm{kN}\end{array}$