Equations > Trigonometry > Trigonometric Identities > Sum and Difference of Angles Identity - Cosine

### Sum and Difference of Angles Identity - Cosine

Latex Code:

MathML Code:

 $\mathrm{cos}\left({\theta }_{1}±{\theta }_{2}\right)=\mathrm{cos}{\theta }_{1}\mathrm{cos}{\theta }_{2}\mp \mathrm{sin}{\theta }_{1}\mathrm{sin}{\theta }_{2}$

MathType 5.0: