Trigonometry Examples

Solve for x tan(2x)=(sin(2x))/(cos(2x))
Step 1
Simplify the left side.
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Step 1.1
Rewrite in terms of sines and cosines.
Step 2
Multiply both sides of the equation by .
Step 3
Cancel the common factor of .
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Step 3.1
Cancel the common factor.
Step 3.2
Rewrite the expression.
Step 4
Cancel the common factor of .
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Step 4.1
Cancel the common factor.
Step 4.2
Rewrite the expression.
Step 5
Move all terms containing to the left side of the equation.
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Step 5.1
Subtract from both sides of the equation.
Step 5.2
Subtract from .
Step 6
Since , the equation will always be true for any value of .
All real numbers
Step 7
The result can be shown in multiple forms.
All real numbers
Interval Notation: