Find the angle between the planes whose vector equations are `vec r . (2 hat i +2 hat j - 3 hat k) = 5` and `vec r .

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Q 1885556467.     Find the angle between the planes whose vector
equations are
`vec r . (2 hat i +2 hat j - 3 hat k) = 5` and `vec r . (3 hat i - 3 hat j + 5 hat k) = 3`

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

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