7. Establish the identity. cos u secu+ tan 1- sin u Write the left side in terms of sine and cosine. sin u sec u+ tan u = cos u cos u Simplify by writing the expression from the previous step over a common denominator. cos u Rewrite the expression from the previous step by multiplying the numerator and denominator by 1- sin u. cos u(1 - sin u) - (Simplify your answer.) Write the numerator of the expression from the previous step in terms of cosine. cos u(1 – sin u) cos u The fraction from the previous step then simplifies to sin u using what? O A. Pythagorean Identity O B. Even-Odd Identity OC. Quotient Identity O D. Cancellation Property Q E. Reciprocal Identity

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