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`tan^(-1)""(x)/(sqrt(a^(2)-x^(2))),|x|lta`

Answer» `tan^(-1)""(x)/(sqrt(a^(2)-x^(2)))=tan^(-1)""(asintheta)/(sqrt(a^(2)-a^(2)sin^(2)theta))`
`=tan^(-1)""(asintheta)/(sqrt(a^(2)(1-sin^(2)theta)))" "" माना " {:(x=asintheta),(impliessintheta=(x)/(a)):}`
`=tan^(-1)""(asintheta)/(sqrt(a^(2)cos^(2)theta))" "impliestheta=sin^(-1)((x)/(a))`
`=tan^(-1)""(asintheta)/(acostheta)=tan^(-1)(tantheta)`
`=theta=sin^(-1)""(x)/(a)`


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