+0  
 
+1
660
1
avatar+44 

need help with this next problem,

 May 16, 2020
 #1
avatar+129899 
+2

cos (4pi/3)  =  cos (240°)  =  - cos (60°)  =  -1/2

 

cool cool cool

 May 16, 2020

3 Online Users

avatar