Establish the identity. tan u - sec u = - cos u / 1 + sin u

Question

Write the left side in terms of sine and cosine.

tan u - sec 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 sin u +1.

? / cos u(sin u + 1) (simplify your answer).

Write the numerator of the expression from the previous step in terms of

cosine.

? / cos u(sin u + 1).

The fraction from the previous step then simplifies to - cos u / 1 + sin u using​ what?

A. Pythagorean identity.

B. Quotient identity.

C. Cancellation property.

D. Reciprocal Identity.

E. Even-Odd identity.

Answer 1