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Function: require_once

수학동아 - 폴리매스
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[창의 퍼즐] 헤론의 공식
△π 2020.04.01 20:47 조회 648
문제 푼 사람 1명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

(1)헤론의 공식을 사인법칙과 코사인법칙, 사인 코사인 사이 관계'만' 사용하여 증명하시오(이 셋 중 안써도 되는 것 있으면 안쓰셔도 되고요)

(2)각 변의 길이가 a,b,c,d인 원에 내접한 사각형의 넓이 또한 헤론의 공식에 (s-d)가 추가된 꼴 임을 증명하시오.

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  •  
    sicma Lv.11 2020.04.01 21:07 비밀댓글
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      △π Lv.9 2020.04.01 21:23 비밀댓글
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    로보카폴리 Lv.11 2020.04.02 00:30 비밀댓글
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      △π Lv.9 2020.04.02 00:31 비밀댓글
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