If a → = 4 i ^ + 7 j ^ - 5 k ^ and b → = 3 i ^ + 4 j ^ + k ^ , find the direction cosines of a → - b →

Question

If   a → = 4 i ^ + 7 j ^ - 5 k ^    and    b → = 3 i ^ + 4 j ^ + k ^ ,  find the direction cosines of   a → - b →

Answer

l = 1 46 , m = - 6 46   a n d   n   =   - 3 46

Answer

l = 3 46 , m = - 1 46   a n d   n =   - 6 46

Answer

l = - 6 46 , m = 3 46   a n d   n =   1 46

Answer

l = 1 46 , m = 3 46   a n d   n =   - 6 46

Crowdly