
	acos (3)		MudOS v21c2		(5 Sep 1994)

	:
		acos() - һ (float) ķֵ 
		(arccosine).
	﷨:
		float acos( float f );

		 acos(  f );
	÷:
                ز f ķֵ, f ĵλ (radians).
	ο:
		asin(3), atan(3), cos(3), sin(3), tan(3)
	:
                Spock @ FF	96.Oct.11.		(printed 3/16/95)
