Verify the identity. 1 - cos 2x tan X = sin 2x ... Use the appropriate double-angle formulas to rewrite the numerator and denominator of the expression on the right. For the numerator, use the double-angle formula that will produce only one term in the numerator when it is simplified. 1 - cos 2x 1 - sin 2x Simplify the numerator. Enter the denominator found in the previous step. Simplify your expression and apply a quotien identity