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If sin^(-1)x+cos^(-1)y=(2pi)/5," then "c...

If `sin^(-1)x+cos^(-1)y=(2pi)/5," then "cos^(-1)x+sin^(-1)y` is

A

1)`(2pi)/5`

B

2)`(3pi)/5`

C

3)`(4pi)/5`

D

4)`(3pi)/10`

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The correct Answer is:
B
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