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# Trigonometry Examples

Multiply and .

Multiply each term in by .

Simplify the left side of the equation by cancelling the common factors.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor using the AC method.

Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .

Write the factored form using these integers.

Factor using the AC method.

Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .

Write the factored form using these integers.

Simplify terms.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Simplify .

Multiply by .

Factor using the AC method.

Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .

Write the factored form using these integers.

Simplify terms.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Multiply both sides of the equation by .

Rewrite using the commutative property of multiplication.

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Apply the distributive property.

Multiply by .