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If the distance between the points (2, 3) and (a, 0) is 3 then a = ______(A) 2 (B) 3 (C) 5 (D) 1 |
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Answer» Correct option (A) 2 Explanation: (2, 3) and (a, 0) distance = 3 Distance = d2 = (x2 – x1)2 + (y2 – y1)2 32 = (a – 2)2 +(0 – 3)2 0 = (a – 2)2 ∴ a – 2 = 0 ⇒ a = 2 |
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