+0  
 
0
97
2
avatar+36 

Compute cos180

 Aug 2, 2020
 #1
avatar+1154 
+2

We solve that cos(180)=-1

 Aug 2, 2020
 #2
avatar+941 
-1

A lot of these questions can be done on the calculater or google search, just a tip

 Aug 2, 2020

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