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In a triangle ABC sides a,b and c are in AP. Prove that cotA/2, cotB/2 and cotC/2 are also in AP

In a triangle ABC sides a,b and c are in AP. Prove that cotA/2, cotB/2 and cotC/2 are also in AP

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago

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