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弧分是長度單位嗎
弧分是長度單位嗎
更新时间:2026-01-02 16:39:04

  弧度是角的度量單位。它是由國際單位制導出的單位,單位縮寫是rad。

  弧度的定義:弧長等于半徑的弧,其所對的圓心角為1弧度。即兩條射線從圓心向圓周射出,形成一個夾角和夾角正對的一段弧。當這段弧長正好等于圓的半徑時,兩條射線的夾角的弧度為1。

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