JEE Main 2021 Mathematics question
The point P(a,b) undergoes the following three transformations successively : (a) reflection about the line y = x. (b) translation through 2 units along the positive direction of x-axis. (c) rotation through angle about the origin in the anti-clockwise direction. If the co-ordinates of the final position of the point P are , then the value of 2a + b is equal to :
Answer: (B)
Solution
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