삼각형 한 내각의 삼등분선 길이
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In this study, we study on the length of bisector of angle by the method using the area, the method using the vector and the method using the similarity, also the length of trisector of angle by the method using the sine law, the method using the area and the method using the second law of cosine in triangle, respectively. And we study on the length of trisector of angle with the length of bisector in angle. This study is expected to use the learning materials for the interesting construction and the problem solving using trigonometric functions.
Abstract
In this study, we study on the length of bisector of angle by the method using the area, the method using the vector and the method using the similarity, also the length of trisector of angle by the method using the sine law, the method using the area and the method using the second law of cosine in triangle, respectively. And we study on the length of trisector of angle with the length of bisector in angle. This study is expected to use the learning materials for the interesting construction and the problem solving using trigonometric functions.
참고문헌 (7)
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- 이상근, "각의 이등분선 및 삼등분선의 방정식 탐구", 수학교육 논문집, 21(3), pp.515~525 (2007), 한국수학교육학회
- 이상근, "각의 삼등분선들의 다양한 위치와 방정식의 탐구", 수학교육 논문집, 22(1), pp.79~89 (2008), 한국수학교육학회
- 이상근, "Morley 정리의 한 증명방법과 그 활용에 대한 연구", East Asian Mathematical Journal, 24(5), pp.521~526 (2008), 영남수학회
- 박윤범, "수학8-나" (2002), 대한교과서(주)
- 임재훈, "수학Ⅱ" (2003), (주)두산
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