Math Trigonometry Review

Posted by Rico's Nerd Cluster on January 13, 2017

t a— layout: post title: Math - Trigonometry Review date: ‘2017-01-13 13:19’ subtitle: comments: true tags: - Math —

Half Angle Formulas

\[\begin{gather*} cos \theta = 2 cos^2 \frac{\theta}{2} -1 \end{gather*}\]