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If x(1),x(2),x(3) are the roots of x^(3)...

If `x_(1),x_(2),x_(3)` are the roots of `x^(3)-6x^(2)+11x-6=0` then `cot^(-1)(x_(1))+cot^(-1)(x_(2))+cot^(-1)(x_(3))` is equal to

A

0

B

`(pi)/(2)`

C

`pi`

D

`(3pi)/(2)`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-REVISION EXERCISE-INVERSE TRIGONOMETRIC FUNCTIONS
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  3. sum(m=1)^(oo)Tan^(-1) ((2m)/(m^(4)+m^(2)+2))=

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  4. If sin^(-1)(x-(x^2)/(2)+(x^3)/(4)-...infty)+cos^(-1)(x^2-(x^4)/(2)+(x^...

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  5. If a(1),a(2),a(3),...a(n) are in A.P. with common difference d, then t...

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  6. The number of solution of the equation Tan^(-1) sqrt(x^(2)+x)+"Cosec"^...

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  7. The number of real solutions of Tan^(-1)sqrt(x(x+1))+Sin^(-1)sqrt(x^(2...

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  8. If x(1),x(2),x(3) are the roots of x^(3)-6x^(2)+11x-6=0 then cot^(-1)(...

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  9. If A=Tan^(-1)((1)/(7)), B=Cot^(-1)(3) then

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  10. Cot^(-1)(sqrt(Cos alpha))-Tan^(-1)( sqrt(Cos alpha))=x then Sinx=

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  11. If 1/2 le x le 1, then cos^(-1)x+cos^(-1)(x/2+1/2sqrt(3-3x^2)) is equ...

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  12. cos^(-1) sqrt((a-x)/(a-b))= sin^(-1) sqrt((x-b)/(a-b)) is possible if

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  13. The value of lim(|x| to oo) cos(tan^(-1)(sin(tan^(-1)x))) is equal to

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  14. If p gt q gt r gt 0 then sum Cot^(-1)((pq+1)/(p-q))=

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  15. If 0 le x le1 and theta=Sin^(-1) x +Cos^(-1) x-Tan^(-1)x then

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  16. 2"Tan"^(-1)(1)/(5)+"Sec"^(-1)(5 sqrt(2))/(7)+"Tan"^(-1)(1)/(8)=

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  17. If "Tan"^(-1)1/(1+2)+"Tan"^(-1)1/(1+(2)(3))+"Tan"^(-1)1/(1+(3)(4))+......

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  18. If x=tan^(-1)(1)+cos^(-1)(-1//2)+sin^(-1)(-1//2) and y=cos[1//2 cos^(-...

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  19. Assertion (A) : sin^(-1)(sin3)=3 Reason (R) : For principal values s...

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  20. Assertion (A) : The value of "tan"^(-1)+"tan"^(-1)3=(3pi)/(4) Reaso...

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