Find the Angle Between the Planes $- 4 ( x - 1 ) + 3 ( y + 2 ) + 5 z = 0$

question 49

Essay

Find the angle between the planes $- 4 ( x - 1 ) + 3 ( y + 2 ) + 5 z = 0$ and $x + 4 ( y - 1 ) + 2 ( z + 4 ) = 0$ .

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Definitions:

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