# Precalculus Examples

Step 1

Step 1.1

Simplify each term.

Step 1.1.1

Rewrite in terms of sines and cosines.

Step 1.1.2

Rewrite in terms of sines and cosines.

Step 1.1.3

Multiply .

Step 1.1.3.1

Raise to the power of .

Step 1.1.3.2

Raise to the power of .

Step 1.1.3.3

Use the power rule to combine exponents.

Step 1.1.3.4

Add and .

Step 1.2

Combine the numerators over the common denominator.

Step 2

Apply pythagorean identity.

Step 3

Step 3.1

Factor out of .

Step 3.2

Cancel the common factors.

Step 3.2.1

Multiply by .

Step 3.2.2

Cancel the common factor.

Step 3.2.3

Rewrite the expression.

Step 3.2.4

Divide by .