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If (Tan^(-1)x)^(2)+(Cot^(-1)x)^(2)=(5pi^...

If `(Tan^(-1)x)^(2)+(Cot^(-1)x)^(2)=(5pi^(2))/8` then =

A

-1

B

1

C

0

D

2

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-INVERSE TRIGNOMETRIC FUNCTIONS-PRACTICE SHEET (EXERCISE-I) (LEVEL - I STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  7. If sin^(-1)(3/x)+sin^(-1)(4/x)=(pi)/2 then x=

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  8. If sin^(-1)(x-(x^(2))/2+(x^(3))/4-……oo) +cos^(-1)(x^(2)-(x^(4))/2+(x...

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