A=6i-8j
B=-8i+3j
C=26i+19j,find a&b such that aA+bB+c=0
aA+bB+C = (6a-8b+26)i + (-8a+3b+19)j = 0
so now just solve
6a-8b+26 = 0
-8a+3b+19 = 0
B=-8i+3j
C=26i+19j,find a&b such that aA+bB+c=0
so now just solve
6a-8b+26 = 0
-8a+3b+19 = 0