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September 18, 2014

September 18, 2014

Posted by **ROBIN** on Monday, July 15, 2013 at 10:34pm.

- MATH -
**mahesh**, Tuesday, July 16, 2013 at 12:15amIf cos^-1x=A then cosA=x and if

(cosx)^-1=A then A=1/cosx

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