Category:Quadruple Angle Formulas

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This category contains pages concerning Quadruple Angle Formulas:


Quadruple Angle Formula for Sine

$\sin 4 \theta = 4 \sin \theta \cos \theta - 8 \sin^3 \theta \cos \theta$


Quadruple Angle Formula for Cosine

$\cos 4 \theta = 8 \cos^4 \theta - 8 \cos^2 \theta + 1$


Quadruple Angle Formula for Tangent

$\tan 4 \theta = \dfrac {4 \tan \theta - 4 \tan^3 \theta} {1 - 6 \tan^2 \theta + \tan^4 \theta}$

Subcategories

This category has the following 2 subcategories, out of 2 total.