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Trigonometry Examples
Step 1
Step 1.1
Simplify the expression.
Step 1.1.1
Rewrite as .
Step 1.1.2
Rewrite as .
Step 1.2
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 1.3
Rearrange terms.
Step 1.4
Apply pythagorean identity.
Step 1.5
Multiply by .
Step 1.6
Apply the cosine double-angle identity.
Step 2
Graph each side of the equation. The solution is the x-value of the point of intersection.
Step 3