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

#### HINT

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

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