sin
cos
tan
equal
angle = ratio
arcsin
arccos
arctan
equal
ratio
steps to find the arcsin/cos/tan
Figure out the angle(s)
Find what ratio the angle goes with
Use the rule to figure out where it belongs
arc sin +
(0,90)
arc sin -
(-90, 0)
arc cos +
(0,90)
arc tan +
(0, 90)
arc tan -
(-90,0)
arc cos -
(90, 180)