Question 41395
secxcos(-x) -sin2x
2 is sqared
DO YOU MEAN SEC(X)COS(-X)-{SIN(2X)}^2.....IF SO...THEN...
{(1/COS(X)}(C0S(X)-{SIN(X)}^2.SINCE COS(-X)=COS(X)
1-{SIN(2X)}^2={COS(2X)}^2