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22.04.2020 •
Mathematics
Vectors a = (3, 4) and b = (m, 2) are given. For which value of m they are perpendicular?
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Ответ:
The value of m is .
Step-by-step explanation:
If two vectors and are perpendicular to each other then their dot product will be zero i.e
If two vectors and are parallel to each other then their cross product will be zero i.e
Given vectors are a= (3,4) and b=(m,2)
The position vector of is =
The position vector of is =
Since and are perpendicular.
Then,
⇒3.m +4.2=0
⇒3m+8=0
⇒3m= -8
The value of m is .
Ответ: