arccosine

反余弦

词形变化

arccosines 复数 arccosines

别名

arccos arc cosine

释义与例句

n.
  1. 1.

    Any of several single-valued or multivalued functions that are inverses of the cosine function.

    反余弦

    数学

词汇关系

名词

同义词 2

arccos inverse cosine

上位词 2

circular function trigonometric function

词源

Etymology tree Proto-Indo-European *h₂erkʷ- Proto-Indo-European *h₂erkʷos Proto-Italic *arkuos Latin arcusder. English arc- Proto-Indo-European *ḱe Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin co-der. English co- Proto-Indo-European *sinos Proto-Italic *sinus Latin sinusbor. English sine English cosine English arccosine From arc- + cosine.

来源：wiktionary