What is the definition of arc cosine ? the inverse function of the cosine; the angle that has a cosine equal to a given number

What words begin like arc cosine ? arc arca arcade arcaded arcadia arcadian arcadian hind arcadianism arcadianly arcadic

What words end like arc cosine ? aborigine ab origine academic discipline acanthine acarine acauline accipitrine accommodation line acetanisidine acetophenetidine