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1. The problem statement, all variables and given/known data

a small boat hangs from two davits one of which is shown in the figure. the tension in line ABAD is 369 N. Determine the moent about C of the resultant force Ra exerted on the davit at A

2. Relevant equations

3. The attempt at a solution

ok so first i took the 369N and multiplyed it by the unit vector

(2.4i-3.1j-1.2k)/(2.4^+3.1^2+1.2^2)^.5 and got (216,-279,-108)

ok then i took the cross product of (216,-279,-108) and (-2.4,0,0)when i did this i got (0,-259.2,670)but the i component shouldnt be zero please help

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# Moment problem

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