Unformatted text preview: , 3 + 7) = (7 ,1 , 10) . 6. Let A = (3 , 5 , 6) , B = (2 , 7 , 9) , C = (2 , 1 , 7). Then (i) cos âˆ ABC = (BA Â·BC ) / ( BA Â· BC ) , whereBA = [1 ,2 ,3] t andBC = [4 ,6 ,2] t . Hence cos âˆ ABC =4 + 12 + 6 âˆš 14 âˆš 56 = 14 âˆš 14 âˆš 56 = 1 2 . Hence âˆ ABC = Ï€/ 3 radians or 60 â—¦ . 88...
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This note was uploaded on 12/19/2011 for the course MAS 3105 taught by Professor Dreibelbis during the Fall '10 term at UNF.
 Fall '10
 Dreibelbis

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