How is -sin x equal to: -(square root of 3)/2 :?:
L Lime New member Joined Sep 8, 2006 Messages 49 Nov 23, 2006 #1 How is -sin x equal to: -(square root of 3)/2 :?:
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Nov 23, 2006 #2 This is trig, not calc. Know the unit circle.
