NDA 2020 Mathematics question
Consider the following statements : 1. If ABC is a right-angled triangle, right-angled at A and if , then . 2. If and if the triangle ABC is not right-angled, then ABC must be isosceles. Which of the above statements is/are correct?
Answer: (B)
Solution
1: with , , so and (it is that equals 3); incorrect. 2: by the sine rule $ B
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