Question: A telephone cable is clamped at A to the pole AB. Knowing that the tension in the left-hand portion of the cable is T1 =

A telephone cable is clamped at A to the pole AB. Knowing that the tension in the left-hand portion of the cable is T1 = 800 lb, determine by trigonometry
(a) The required tension T2 in the right-hand portion if the resultant R of the forces exerted by the cable at A is to be vertical,
(b) The corresponding magnitude of R.

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