A= (-3, -4) and B= (-2,j). if B is in the second quadrant and is perpendicular to A, what is j to...

Question

A= (-3, -4) and B= (-2,j). if B is in the second quadrant and is perpendicular to A, what is j to one decimal place?

Amit · Accepted Answer

Assignment Question
A= (-3, -4) and B= (-2,j). if B is in the second quadrant and is perpendicular to A, what is j to one decimal place?
Solution: 
A=(-3,-4)
B= (-2,j)
Given ). B is perpendicular to A
=0
After matrx multiplication
But B is in second quadrant so
 
j to one decimal place= 2.

A= (-3, -4) and B= (-2,j). if B is in the second quadrant and is perpendicular to A, what is j to one decimal place?

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