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Mathematics 11 Online
OpenStudy (anonymous):

\[sin^{-1}\left(\frac{2\sqrt 5}{5}\right)\]

OpenStudy (anonymous):

\[sin\;\alpha=\frac{2\sqrt 5}{5}\]

OpenStudy (anonymous):

|dw:1362691940470:dw|

zepdrix (zepdrix):

Hmm this is a weird problem =o Is there more to it? Or just the arcsine part?

OpenStudy (anonymous):

|dw:1362692146119:dw|

OpenStudy (experimentx):

|dw:1362692310963:dw|

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