1.Reciprocal leveling across a cannon provides the data listed in (ft). The elevation of Y is 5265.879 ft. The elevation of X is required. Instrument at X: +S = 3.182,-S = 9.365,9.370, and 9.368. Instrument at Y: +S = 10.223; -S = 4.037,4.041, and 4.038. Find the elevation of X?
2.A telephone cable is clamped at A to the pole AB. Knowing that the tension in the right-hand portion of the cable is T2= 1000 lb. determine by trigonometry
(a) the required tensoin T1 in the left hand portion if the R of the force exerted by the cable at A is to be vertical,
(b) the corresponding magnitude of R.