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If x,y,z are in A.P and Tan^(-1) x, Tan^...

If x,y,z are in A.P and `Tan^(-1) x, Tan^(-1) y and Tan^(-1) z ` are also in A.P., then

A

`x=y=z`

B

`2x=3y=6z`

C

`6x=3y=2z`

D

`6x=4y=3z`

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The correct Answer is:
A
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AAKASH SERIES-INVERSE TRIGNOMETRIC FUNCTIONS-LECTURE SHEET (EXERCISE - II) (STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  13. The value of alpha such that sin^(-1)""2/sqrt(5), sin^(-1)""3/sqrt(10)...

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  14. sum(r=1)^(n)sin^(-1)((sqrt(r)-sqrt(r-1))/sqrt(r(r+1))) is equal to

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  15. sum(m=1)^(oo)Tan^(-1) ((2m)/(m^(4)+m^(2)+2))=

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  16. The value of "tan"^(-1)4/7+"tan"^(-1)4/19+"tan"^(-1)4/39+"tan"^(-1)4/6...

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  17. The sum of series sec^(-1)sqrt(2)+"sec"^(-1)(sqrt(10))/3+"sec"^(-1)(sq...

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  20. The value of cot(sum(n=1)^(23)cot^(-1)(1+sum(k=1)^(n)2k)) is

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