Maths
Jump to navigation
Jump to search
Useful Formulas
Law of Cosines - <math>c^2 = a^2 + b^2 - 2ab\cos\gamma\,</math>
Angle Addition - <math> \cos({\theta+\phi}) = \real \left( \exp{\imath \theta} \exp{\imath \phi} \right) = \cos{\theta}\cos{\phi} - \sin{\theta}\sin{\phi} </math>
Trig Product - <math> 2 \cos{\theta}\cos{\phi} = \real \left( \exp{\imath \theta} \exp{\imath \phi} \right) - \real \left( \exp{\imath \theta} \exp{-\imath \phi} \right) = \cos({\theta+\phi}) + \cos({\theta-\phi}) </math>