+0  
 
0
36
2
avatar

Write the Formula of SinC + SinD = ? And Sin3theta = ?

 
 Sep 22, 2022
 #1
avatar+13887 
+1

Hello Guest!

 

These formulas were derived with the help of the addition theorems.

 

\(sin\ C+sin\ D=\color{blue}2sin\ \frac{C+D}{2}cos\ \frac{C-D}{2}\\ sin\ 3\theta=\color{blue}3sin\ \theta-4sin^3\theta \)

laugh   !

 
 Sep 22, 2022
edited by asinus  Sep 22, 2022

11 Online Users

avatar