Trigonometry Examples

Expand Using Sum/Difference Formulas sin(pi/4+x)
Step 1
Use the sum formula for sine to simplify the expression. The formula states that .
Step 2
Remove parentheses.
Step 3
Simplify each term.
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Step 3.1
The exact value of is .
Step 3.2
Combine and .
Step 3.3
The exact value of is .
Step 3.4
Combine and .
Step 4
Simplify.
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Step 4.1
Combine the numerators over the common denominator.
Step 4.2
Factor out of .
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