Write the following functions in the simplest form: `tan^(-1){x/(sqrt(a^2-x^2))}`

Explanation

`tan ^{-1} frac{x}{sqrt{a^{2}-x^{2}}}`
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Let x=a sin theta`
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frac{x}{a}=sin theta Rightarrow theta=sin ^{-1} frac{x}{a}`


Therefore,
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=tan ^{-1} frac{x}{sqrt{a^{2}-x^{2}}}`
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