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If cos^(-1)((y)/(b))=nlog((x)/(n)) , th...

If `cos^(-1)((y)/(b))=nlog((x)/(n))` , then

A

`xy_(1)=nsqrt(b^(2)-y^(2))`

B

`xy_(1)+nsqrt(b^(2)-y^(2))=0`

C

`y_(1)=xsqrt(b^(2)-y^(2))`

D

`xy_(1)-sqrt(b^(2)-y^(2))=0`

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