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want help in rewrite expression sqrt(81-x^(2))/x x=9 sin theta
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To rewrite the expression `sqrt(81-x^(2))/x` plug in the value of x.
`= sqrt((81*cos^2theta)/(9sintheta))` `(sin^2theta=1-cos^2theta)`
This is the required expression.
Posted by llltkl on July 10, 2013 at 12:43 AM (Answer #1)
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