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  • 23-09-2016
  • Mathematics
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cos^-1 sqrt 2/2 exact value

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  • 23-09-2016
[tex]\sf cos^-1 (\frac{\sqrt{2}}{2})=cos^-1 (\frac{1}{ \sqrt{2}})= \frac{ \pi }{4} ={\boxed{45\°}[/tex]
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