The angle between the lines r=(3 i+2 j-4 k)+ ( i+2 j+2 k) and r=(5 i-2 k)+ (3 i+2 j+6 k)

MHT CET 2022 Mathematics question

The angle between the lines

and

Answer: (D)

The angle between two lines is the angle between their direction vectors and . , , . Therefore

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Question ID VK-094157