JEE Main 2024 Mathematics question
If the line segment joining the points (5, 2) and (2, a) subtends an angle at the origin, then the absolute value of the product of all possible values of a is:
Answer: (D)
Solution
tan(π/4) = 1 = |(5a − 4)/(10 + 2a)|, so 5a − 4 = ±(10 + 2a) gives a =
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