Category:Trigonometric Addition Formulas

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This category contains pages concerning Trigonometric Addition Formulas:


Sine of Sum

$\map \sin {a + b} = \sin a \cos b + \cos a \sin b$


Cosine of Sum

$\map \cos {a + b} = \cos a \cos b - \sin a \sin b$


Tangent of Sum

$\map \tan {a + b} = \dfrac {\tan a + \tan b} {1 - \tan a \tan b}$

Also see