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If n in N, sum(k=1)^(n)cos^(-1)(x(k))=np...

If `n in N, sum_(k=1)^(n)cos^(-1)(x_(k))=npi` then the value of `sum_(k=1)^(n)sin^(-1)(x_(k))=`

A

1)0

B

2)`(npi)/2`

C

3)`-(npi)/2`

D

4)`-n pi `

Text Solution

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The correct Answer is:
C
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