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A steel tank is to be positioned in an excavation. Knowing that a = 20, determine by trigonometry (a) the required magnitude of the

A steel tank is to be positioned in an excavation. Knowing that a = 20, determine by trigonometry (a) the required magnitude of the force P if the resultant R of the two forces applied at A is to be vertical, (b) the corresponding magnitude of R. Fig. P2.11 425 lb 30

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