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[창의 퍼즐] 기하[증명]
우럭 2020.07.15 19:19 조회 580
문제 푼 사람 2명
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

원에 내접하는 삼각형 ABC와 

각 A의 이등분선과 BC의 교점을 D, 외접원과의 교점을 E라고 하면, 

AD2 = AB*AC-BD*CD임을 증명하시오.

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    해결
    전자기역학 Lv.8 2020.07.15 19:32 비밀댓글
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    해결
    mwryan Lv.6 2020.07.15 19:44 비밀댓글

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    Function: getLatexImg

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