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JEE Advanced Mathematics question

MathematicsThree Dimensional GeometryJEE Advanced

A line with direction ratios meets the lines and at and , respectively. Then the length of is

Answer: (B)

Solution

First line: , so . Second line: , so .

must be proportional to :

Missing argument for \frac\frac{t - 2s + a}{2

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Question ID VK-110459