1 - 2 cos (x) is equivalent to sin(2x) cos (x) - sin (x) cos(2x) answer is not listed - cos(2x) To solve tan (x) tan(x) = 0 which steps should be taken - GCF(greatest common factor) a tan(x) out of equation and then apply a difference of squares divide across by tan(x) and then apply a difference of squares O GCF (greatest common factor) a tan(x) out of the equation and then apply difference of cubes apply a sum of cubes apply a difference of cubes Period of tan 2 2 BN 4 ( 0 2 is S answer is not listed 4