A = 4i - 2j + 4k and B =-4i+2j +ak perpendicular to each other then find value of a ?
Answers
Answered by
2
Answer:
Step-by-step explanation:
A.B=0
4*4 +(-2*2)+a*4 = 0
16-4+4a = 0
12+4a = 0
a = -3
Answered by
2
Answer:
a=-3
as a.b = 0
so,
4(-4)+(-2)2j+4(a)=0
=>a=-3
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