怎樣計(jì)算三角函數(shù)值.
怎樣計(jì)算三角函數(shù)值.
數(shù)學(xué)人氣：283 ℃時(shí)間：2020-05-12 17:56:33
優(yōu)質(zhì)解答
正弦是角的對(duì)邊比斜邊,正切是對(duì)邊比鄰邊,余弦是鄰邊比斜邊,余切鄰邊比對(duì)邊
最長邊為斜邊,另外一邊為鄰邊
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