The angle between the planes `vec r (2 hat i - 3 hat j + hat k) = 1` and `vec r (hat i - hat j) = 4` is `cos^(-1) ( (-

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Q 2009801718.     The angle between the planes `vec r (2 hat i - 3 hat j + hat k) = 1` and `vec r (hat i - hat j) = 4` is
`cos^(-1) ( (-5)/sqrt(58) )`.
A True
B False

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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