If →A = 3 ^i + 4 ^j and →B = 7 ^i + 24 ^j , find a vector having the same magnitude as →B and parallel to →A
B = √72+242 = 25
and ^A = ^AA = 3^i+4^j√32+42
= 15 (3 ^i + 4 ^j)
∴ BA = 25 × 15 (3 ^i + 4 ^j ) = 15 ^i + 20 ^j