+0  
 
0
45
2
avatar

Sin(x-pi) = -sinx 

I have to vertify the identity

 Mar 5, 2021
 #1
avatar+31212 
+2

sin(α − β) = sin α cos β − cos α sin β

                = sinx cos pi   -  cos x sin pi

                = -sin x   (-1)     -   cos (x)  ( 0)

                = - sin x

 Mar 5, 2021
 #2
avatar+42 
0

Thank u!!

Country03  Mar 5, 2021

39 Online Users

avatar
avatar
avatar