Solve the problem using the vector form v =  [(cos ?)i + (sin ?)j].A weight of 500 lb is supported by a frame made of two rods and hinged at points A, B, and C. Find the forces exerted by the two rods rounded to the nearest pound. 

A. Horizontal rod: 10-lb tension; other rod: 555 -lb compression
B. Horizontal rod: 673 -lb tension; other rod: 450-lb compression
C. Horizontal rod: 450-lb tension; other rod: 673-lb compression
D. Horizontal rod: 555-lb tension; other rod: 747-lb compression


Answer: D

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