Find the angle between the planes x + 2y + 3z + 1 = 0 and (4, 1, -7). – McqOptions

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1.	Find the angle between the planes x + 2y + 3z + 1 = 0 and (4, 1, -7).
A.	29.34
B.	3.43
C.	11.23
D.	17.54
Answer» B. 3.43

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