### Home > A2C > Chapter 13 > Lesson 13.2.3 > Problem 13-133

13-133.

Express and

*and then simplify.*

How can you change

What ratios using those trig functions do they equal?

Simplify create common denominators in the denominators of the larger fractions.

Simplify each fraction using a Giant One.

Notice you have created a common denominator.

Combine the two fractions.

The numerator is a difference of two squares.

Keep simplifying.