Let PQR be a triangle. Let a = QR , b = RP and c = PQ . If | a |=12, | b |=4 3 and b c =24, then which of the following is (are) true?

JEE Advanced 2015 Mathematics question

Let be a triangle. Let , and . If , and , then which of the following is (are) true?

Answer: (A),(C),(D)

. From : . (A) : true. (B) : false. (D) From : \vec\vec$

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Question ID VK-026421