Principle Of Mathematical Induction

Question
CBSEENMA11013928

In triangle ABC comma space show that:

1 over straight a cos squared open parentheses straight A over 2 close parentheses plus 1 over straight b cos squared open parentheses straight B over 2 close parentheses plus 1 over straight c cos squared open parentheses straight C over 2 close parentheses space equals space straight s squared over abc


Solution

Solution not provided.

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