CAT 2019 Slot 2 QA · Question 3
Let a, b, x, y be real numbers such that a2 + b2 = 25 , x2 + y2 = 169 and ax + by = 65. If k = ay - bx, then
- A.k = 0
- B.k >
- C.k =
- D.0 < k ≤
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Show answerLet a, b, x, y be real numbers such that a2 + b2 = 25 , x2 + y2 = 169 and ax + by = 65. If k = ay - bx, then
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