trig
posted by Steve .
Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1

cos^2 x= cosX * CosX
Surely you are looking for something more complex than that.
posted by Steve .
Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1
cos^2 x= cosX * CosX
Surely you are looking for something more complex than that.