Trigonometry Examples

Expand the Trigonometric Expression tan(3x)
tan(3x)
Step 1
Apply the tangent triple-angle identity.
3tan(x)-tan3(x)1-3tan2(x)
Step 2
Factor tan(x) out of 3tan(x)-tan3(x).
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Step 2.1
Factor tan(x) out of 3tan(x).
tan(x)3-tan3(x)1-3tan2(x)
Step 2.2
Factor tan(x) out of -tan3(x).
tan(x)3+tan(x)(-tan2(x))1-3tan2(x)
Step 2.3
Factor tan(x) out of tan(x)3+tan(x)(-tan2(x)).
tan(x)(3-tan2(x))1-3tan2(x)
tan(x)(3-tan2(x))1-3tan2(x)
tan(3x)
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 [x2  12  π  xdx ]