Question

two vectors X and Y such that x is equal to 2 i- mj+ 3 k and Y is equal to i - 4j - 2 k If two vectors are perpendicular then find the value of m​

Answer 1

Explanation:

Both vectors are perpendicular so their dot product is zero!

X.Y = 0

(2i -mj +3k)(i-4j-2k)= 0

2 +4m -6 = 0

.......(i. i = 1,i.j = 0, i .k = 0 )

4m = 4

m = 1

Hope it helps uh!!