Trigonometric Equations
Trigonometric equations involve trigonometric functions that are periodic and therefore their solutions can occur in one or two quadrants and all revolutions.
To solve a trigonometric equation make the changes needed to work with only one trigonometric function, then if needed, use fundamental trigonometric identities.
Examples
Solve the trigonometric equation:
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Divide by 2 and equate each factor to 0.


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