AP and TS EAMCET Engineering 2020 Model Paper 2

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Question : 2 of 160

Marks: +1, -0

tan−1

1

3

+tan−1

1

7

....tan−1(

1

n2+n+1

)=

tan−1(
2n−1
n+2
)
tan−1(
2n
n+5
)
tan−1(
1
n+2
)
tan−1(
n
n+2
)

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