The angle between the lines r=( i+2 j+3 k)+ (2 i-2 j+ k) and r=( i+2 j+3 k)+ ( i+2 j+2 k) is

MHT CET 2022 Mathematics question

The angle between the lines and is

Answer: (A)

The angle between two lines is the angle between their direction vectors and . . Since the dot product is zero (and neither vector is

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Question ID VK-093599