(a) Given two vectors →A=4.20 ^i+7.60 ^j and →B=5.70 ^i−2.70 ^j, find the scalar product of the two vectors A→ and B→.
(b) Find the angle between these two vectors.
(a) Given two vectors →A=4.20 ^i+7.60 ^j and →B=5.70 ^i−2.70 ^j, find the scalar product of the two vectors A→ and B→.
(b) Find the angle between these two vectors.