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Sep 2020
math.libretexts.org
math.libretexts.org
7.4: Double-Angle, Half-Angle, and Reduction Formulas
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matthew1999444
13 Sep 2020
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cos2(2x)
cos(2x)
matthew1999444
12 Sep 2020
in
Public
2cotθ−tanθ
Should be 2/cot()-tan()
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matthew1999444
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math.libretexts.org/Bookshelves/Precalculus/Book:_Precalculus_(OpenStax)/07:_Trigonometric_Identities_and_Equations/7.04:_Double-Angle,_Half-Angle,_and_Reduction_Formulas
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