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Trigonometry Examples
Step 1
Step 1.1
Factor using the AC method.
Step 1.1.1
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 .
Step 1.1.2
Write the factored form using these integers.
Step 1.2
Factor using the perfect square rule.
Step 1.2.1
Rewrite as .
Step 1.2.2
Check that the middle term is two times the product of the numbers being squared in the first term and third term.
Step 1.2.3
Rewrite the polynomial.
Step 1.2.4
Factor using the perfect square trinomial rule , where and .
Step 2
Step 2.1
Finding the LCD of a list of values is the same as finding the LCM of the denominators of those values.
Step 2.2
The LCM is the smallest positive number that all of the numbers divide into evenly.
1. List the prime factors of each number.
2. Multiply each factor the greatest number of times it occurs in either number.
Step 2.3
The number is not a prime number because it only has one positive factor, which is itself.
Not prime
Step 2.4
The LCM of is the result of multiplying all prime factors the greatest number of times they occur in either number.
Step 2.5
The factors for are , which is multiplied by itself times.
occurs times.
Step 2.6
The factor for is itself.
occurs time.
Step 2.7
The LCM of is the result of multiplying all factors the greatest number of times they occur in either term.
Step 3
Step 3.1
Multiply each term in by .
Step 3.2
Simplify the left side.
Step 3.2.1
Cancel the common factor of .
Step 3.2.1.1
Cancel the common factor.
Step 3.2.1.2
Rewrite the expression.
Step 3.2.2
Expand using the FOIL Method.
Step 3.2.2.1
Apply the distributive property.
Step 3.2.2.2
Apply the distributive property.
Step 3.2.2.3
Apply the distributive property.
Step 3.2.3
Simplify and combine like terms.
Step 3.2.3.1
Simplify each term.
Step 3.2.3.1.1
Multiply by .
Step 3.2.3.1.2
Move to the left of .
Step 3.2.3.1.3
Multiply by .
Step 3.2.3.2
Subtract from .
Step 3.3
Simplify the right side.
Step 3.3.1
Simplify each term.
Step 3.3.1.1
Cancel the common factor of .
Step 3.3.1.1.1
Factor out of .
Step 3.3.1.1.2
Cancel the common factor.
Step 3.3.1.1.3
Rewrite the expression.
Step 3.3.1.2
Apply the distributive property.
Step 3.3.1.3
Multiply by .
Step 3.3.1.4
Cancel the common factor of .
Step 3.3.1.4.1
Factor out of .
Step 3.3.1.4.2
Cancel the common factor.
Step 3.3.1.4.3
Rewrite the expression.
Step 3.3.1.5
Expand using the FOIL Method.
Step 3.3.1.5.1
Apply the distributive property.
Step 3.3.1.5.2
Apply the distributive property.
Step 3.3.1.5.3
Apply the distributive property.
Step 3.3.1.6
Simplify and combine like terms.
Step 3.3.1.6.1
Simplify each term.
Step 3.3.1.6.1.1
Multiply by .
Step 3.3.1.6.1.2
Move to the left of .
Step 3.3.1.6.1.3
Multiply by .
Step 3.3.1.6.2
Subtract from .
Step 3.3.2
Simplify by adding terms.
Step 3.3.2.1
Subtract from .
Step 3.3.2.2
Add and .
Step 4
Step 4.1
Move all terms containing to the left side of the equation.
Step 4.1.1
Add to both sides of the equation.
Step 4.1.2
Subtract from both sides of the equation.
Step 4.1.3
Combine the opposite terms in .
Step 4.1.3.1
Subtract from .
Step 4.1.3.2
Add and .
Step 4.1.4
Add and .
Step 4.2
Move all terms not containing to the right side of the equation.
Step 4.2.1
Add to both sides of the equation.
Step 4.2.2
Add and .
Step 4.3
Divide each term in by and simplify.
Step 4.3.1
Divide each term in by .
Step 4.3.2
Simplify the left side.
Step 4.3.2.1
Cancel the common factor of .
Step 4.3.2.1.1
Cancel the common factor.
Step 4.3.2.1.2
Divide by .
Step 4.3.3
Simplify the right side.
Step 4.3.3.1
Dividing two negative values results in a positive value.
Step 5
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
Mixed Number Form: