Definition
A mathematical function, short for 'arc cosine', that finds the angle whose cosine value you already know.
Etymology
Abbreviation of 'arc cosine', combining 'arc' (from Latin 'arcus' meaning 'arc' or 'bow') with 'cosine' (a trigonometric function). The 'arc' prefix indicates it's the inverse function that recovers an angle.
Kelly Says
If cosine tells you 'I know the angle, what's the cosine?', arccos flips that around and says 'I know the cosine value, what angle made it?'—it's like having a question-answer machine in reverse.
Translations
ARالعربية
الزاوية المقوسة
al-zawiyat al-maqoussa
CSČeština
arccosu
ar-koh-koo-soo
DEDeutsch
Arccosinus
ark-koh-see-noos
ELΕλληνικά
άρκκοσ
ark-kohs
ESEspañol
arcocoseno
ar-koh-koh-seh-noh
FRFrançais
arccos
ark-kohs
HIहिन्दी
अर्कोसाइन
ar-koh-sayn
IDBahasa Indonesia
arccos
ark-kohs
ITItaliano
arcocoseno
ar-koh-koh-seh-noh
KKKK
арккосинус
ark-ko-see-noos
KO한국어
反正弦
bang-jeon-hyeon
MSBahasa Melayu
arccos
ark-kohs
MYမြန်မာ
အာကောစ
a-kah-kohs
NLNederlands
arccos
ark-kohs
PLPolski
arccocos
ar-koh-koh-seh-noh
PTPortuguês
arcocoseno
ar-koh-koh-seh-noh
RUРусский
арккосинус
ark-ko-see-noos
SVSvenska
arccos
ark-kohs
SWKiswahili
arccos
ark-kohs
TAதமிழ்
அர்க்கோச
ar-koh-s
TEతెలుగు
అర్కొస
ar-koh-sa
THไทย
อาร์คคอส
a-rk-koh-kos
UKУкраїнська
арккосинус
ark-ko-see-noos
VITiếng Việt
arccocos
ar-koh-koh-seh-noh