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1. arcsin sqrt2/2

= pi/4

 

2. arcsin sqrt3/2

= pi/3

 

3.  cos^-1  sqrt2/2

= pi/4

 

4.  arcsin 0.3907                

= 0.401              

 

5.  arccos 0.7990 

= 0.645                

 

 

6.  tan^-1  0.3673  

= 0.352
 

 Mar 23, 2019
 #1
avatar+30 
+1

you can use a calculator to check, you know

 Mar 23, 2019

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