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JEE Main 2019 Mathematics question

MathematicsThree Dimensional GeometryJEE Main 2019

Two lines and intersect at the point R. The reflection of R in the xy-plane has coordinates:

Answer: (B)

Solution

R = (2, −4, 7) (parameters −1 and 1); reflection (2, −4, −7). (The

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Question ID VK-010448