1.    Tan-1 ((1+x2)1/2   -x )

2.    Tan-1  (a-x / a+x)1/2

3.    Sin-1  (1-x / 2)1/2

4.    Tan-1  (x / 1+30x2 )

Asked by Nidhi Kobra | 28th Apr, 2014, 12:36: PM

Expert Answer:

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Answered by  | 28th Apr, 2014, 05:39: PM

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