7 March 2020 Sergiu Funieru The formula for sin (a + b) [formula for the sine of sum] 0 The formula for sin (a + b) [formula for the sine of sum] Have you seen this? 0
![The formula for sin (a + b) [formula for the sine of sum]](https://lunlun.com/wp-content/uploads/2020/03/The-formula-for-sin-a-b-formula-for-the-sine-of-sum.png "The formula for sin (a + b) [formula for the sine of sum]")