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SteelDirigibl
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Homework Statement
I need help with trusses.
Determine the force in members: (a)AD, (b)CD, (c)AB, (d)BC, (e)BD of the loaded truss. (Note: compression forces must be negative.)
Homework Equations
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The Attempt at a Solution
I found the components of AB and BC since upward components at A and C are 900 lb upward and cotan(30.3)*900 is 1540. But how do I get the components of the others? (and why/how do I know that BC is zero?