12 March 2020 Sergiu Funieru The formula for cos (a – b) [formula for the cosine of difference] The formula for cos (a – b) [formula for the cosine of difference] Buy "Learn Math (50 formulas with examples)" eBook for 50% off.
![The formula for cos (a - b) [formula for the cosine of difference]](http://lunlun.com/wp-content/uploads/2020/03/The-formula-for-cos-a-b-formula-for-the-cosine-of-difference.png "The formula for cos (a - b) [formula for the cosine of difference]")