The rod is supported by ball$-$and$-$socket joint D and cables AB $,$ AC $.($Note that this ball$-$and$-$socket joint reacts a support force, but no moment resistance at D$.)$ Suppose that F $=900$ N and x $=4\mathrm{.}5$ m $.($Figure $1)$Determine the tension in the cable AB $.$ Express your answer to three significant figures and include the appropriate units. Figure

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