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MHT CET Mathematics question

MathematicsThree Dimensional GeometryMHT CET

The direction cosines of a moving line in two adjacent positions are and , the small angle between the positions is given by............

Answer: (D)

Solution

For two unit vectors a small angle between them is the length of the chord joining their tips, so chord. The chord has components $(δ l,

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Question ID VK-027160