Trig. the angle, measured in radians, that has a cosine equal to a given number. Abbr.: arc cos; Symbol: cos -1 Also called inverse cosine .
[ 1905-10 ]
Trig. the angle, measured in radians, that has a cosine equal to a given number. Abbr.: arc cos; Symbol: cos -1 Also called inverse cosine .
[ 1905-10 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012