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Can you tell me which keys on the calculator to use to enter the following: sin-1(9/16) which should give me an answer of: 55.8. 

Thanks

math
 Aug 24, 2014

Best Answer 

 #1
avatar+130511 
+5

The arcsin of (9/16) isn't 55.8. The arccos of (9/16) will give you that answer. Go to the onsite calculator. Hit the "2nd" button and you will see the "acos" button. Hit this, key in 9/16, hit "Enter" or the "=" key and you will get your result.

 

 Aug 24, 2014
 #1
avatar+130511 
+5
Best Answer

The arcsin of (9/16) isn't 55.8. The arccos of (9/16) will give you that answer. Go to the onsite calculator. Hit the "2nd" button and you will see the "acos" button. Hit this, key in 9/16, hit "Enter" or the "=" key and you will get your result.

 

CPhill Aug 24, 2014

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