. . "113786960"^^ . . "trigonometric function"^^ . . "function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle"@en-us . "13786960-n"^^ . . . "circular function"@en-us . . . . "0"^^ . . . "113009249"@en-us . "trigonometric function"@en-us . "0"^^ . .