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

13-133.

Express in terms of  and  and then simplify. Homework Help ✎

How can you change  and  to  and ?
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.