Question: An elastic exercise band is grasped and then is stretched as shown. Knowing that the tensions in portions BC and DE of the band are

An elastic exercise band is grasped and then is stretched as shown. Knowing that the tensions in portions BC and DE of the band are 80 N and 60 N, respectively, determine, using trigonometry,

(a) The required angle Î± if the resultant R of the two forces exerted on the hand at A is to be vertical,

(b) The corresponding magnitude of R.

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