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Clearnote
Q&A
Senior High
Mathematics
これの解説をお願いします😖😖😖
Mathematics
Senior High
over 4 yearsago
メア
これの解説をお願いします😖😖😖
◆新編数学IP142側10◆ 正三角形の外接円の半径を求めてみよう! 1辺の長さが 10 の正三角形の外接円の半径を Rとする。 正脇定理より 10 a 660° SinA =2R 10 - 28 Sin60
Answers
名前なににしyo
over 4 yearsago
Sin60°=√3/2です
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