If, y = tan-1(x/a), then what is the value of y ? – McqOptions

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1.	If, y = tan^-1(x/a), then what is the value of y ?
A.	(2ax/(x<sup>2</sup> a<sup>2</sup>)<sup>2</sup>)
B.	-(2ax/(x<sup>2</sup> a<sup>2</sup>)<sup>2</sup>)
C.	(2ax/(x<sup>2</sup> + a<sup>2</sup>)<sup>2</sup>)
D.	-(2ax/(x<sup>2</sup> + a<sup>2</sup>)<sup>2</sup>)
Answer» E.

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