Question: a) Find the angle between the two vectors = li + 2j - k and b= 3i 2j+ 4k. b) Determine the value of

a) Find the angle between the two vectors = li + 2j

a) Find the angle between the two vectors = li + 2j - k and b= 3i 2j+ 4k. b) Determine the value of b so that the vectors = < -2, 4, 1>,0= < 5, -2, -1> and w = < 3, 4, 6 > are in the same plane.

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