This preview shows page 1. Sign up to view the full content.
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 ABC = (BA BC ) / ( BA BC ) , whereBA = [1 ,2 ,3] t andBC = [4 ,6 ,2] t . Hence cos ABC =4 + 12 + 6 14 56 = 14 14 56 = 1 2 . Hence ABC = / 3 radians or 60 . 88...
View Full
Document
 Fall '10
 Dreibelbis

Click to edit the document details