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If the vectors A = 6i + 8j and B = 3i + 4j are perpendicular, what is the value of A · B? (2021)

Practice Questions

1 question
Q1
If the vectors A = 6i + 8j and B = 3i + 4j are perpendicular, what is the value of A · B? (2021)
  1. 0
  2. 18
  3. 30
  4. 42

Questions & Step-by-step Solutions

1 item
Q
Q: If the vectors A = 6i + 8j and B = 3i + 4j are perpendicular, what is the value of A · B? (2021)
Solution: A · B = (6)(3) + (8)(4) = 18 + 32 = 50, but since they are perpendicular, A · B = 0.
Steps: 0

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