MCQ
The angle between the planes and `bar"r"*(2hat"i" + hat"j" - hat"k") = 3` and `bar"r"*(hat"i" + 2hat"j" + hat"k") = 1` is ______.
  • A
    `pi/6`
  • B
    `pi/2`
  • `pi/3`
  • D
    `pi/4`

Answer

Correct option: C.
`pi/3`
C

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