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If sin^(-1)(a-a^2/3+a^3/9-...)+cos^(-1)(...

If `sin^(-1)(a-a^2/3+a^3/9-...)+cos^(-1)(1+b+b^2+...)=pi/2` then find `a` and `b`

A

a=-3 and b=1

B

a=1 and `b=-1/3`

C

`a=1/6` and `b=1/2`

D

None of these

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The correct Answer is:
B
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DISHA PUBLICATION-INVERSE TRIGONOMETIC FUNCTIONS-EXERCISE - 2: (CONCEPT APPLICATOR)
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