MHT CET 2025 Mathematics question

MathematicsVector AlgebraMHT CET 2025

Two adjacent sides of a parallelogram ABCD are given by and . The side AD is rotated by an acute angle in the plane of parallelogram so that AD becomes AD'. If AD' makes a right angle with the side AB then

Answer: (B)

Solution

, and . If is the angle between and , , so . To make

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Question ID VK-103349