`sin(x)cos(x)` Use a double angle formula to rewrite the expression.

You need to use the double angle formula to re-write the expression, such that:

`sin 2x = 2 sin x*cos x=> sin x*cos x = (sin 2x)/2`

Hence, using the double angle formula to re-write the expression yields `sin x*cos x = (sin 2x)/2.`

You need to use the double angle formula to re-write the expression, such that:

`sin 2x = 2 sin x*cos x=> sin x*cos x = (sin 2x)/2`

Hence, using the double angle formula to re-write the expression yields `sin x*cos x = (sin 2x)/2.`