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How do I activate the cos-1?

 Jun 1, 2015

Best Answer 

 #1
avatar+118613 
+5

inverse cos is the same as arc cos 

use

[2nd] [acos]  number

 Jun 1, 2015
 #1
avatar+118613 
+5
Best Answer

inverse cos is the same as arc cos 

use

[2nd] [acos]  number

Melody Jun 1, 2015

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