Keywords: Dsinx.png en graphic showing the derivation of sin x curve DC delta DE DC cos phi phi ceta+delta-delta/2 d/d ceta sin ceta lim delta->0 DE/curve DC lim delta->0 DE/DC lim delta->0 DC/curve DC lim delta->0 cos phi 1 lim delta->0 cos ceta+delta/2 cos ceta Own Protious 2008-12-22 Differential calculus Sine function |