Ministry of Education 《Revised Mandarin Chinese Dictionary》
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「
餘弦 :
ㄩ
ˊ
ㄒㄧㄢ
ˊ
」
Bopomofo
Hanyu pinyin
Interpretation
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Word
餘
弦
Bopomofo
ㄩ
ˊ
ㄒㄧㄢ
ˊ
Hanyu pinyin
yú xián
Interpretation
數學上指三角函數之一。記號為cos，即直角三角形中任一銳角的鄰邊與斜邊的比值。
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