# Trigonometry Examples

Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Remove parentheses.

Simplify each term.

Simplify .

Raise to the power of .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Move to the left of the expression .

Multiply by .

Rewrite as .

Multiply by .

Multiply by .

Add and .

Add and .

Apply pythagorean identity.