This is the question.

Write the left side of the identity using the sum and difference formula. (-ia(_) (Type the terms of your expression in the same order as they appear in the original expression.) Use the distributive property to simplify the expression from the previous step. V - (Simplify your answer.) Substitute 1 cos 2B for sin 213 in the expression from the previous step and distribute. . Regroup and factor the expression from the previous step. Do not apply any trigonometric identities yet. The expression from the previous step then simplifies to cos B - sin a using what? O A. Pythagorean Identity O B. Quotient Identity O C. Even-Odd Identity O D. Reciprocal Identity O E. Cancellation Property\f