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Select the wrong option

A

`-1 le sin^(-1)x le 1 rArr -sin1 le x le sin1`

B

`pi/3 le cos^(-1)x le (3pi)/3 rArr-1/2 le x le 1/2`

C

`pi/4 le cot^(-1)x le (5pi)/6 rArr -sqrt3 le x le 1`

D

`sec^(-1)x ge pi/4rArr x le sqrt2`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-INVERSE TRIGONOMETRIC FUNCTIONS-ASSIGNMENT (SECTION - B)(OBJECTIVE TYPE QUESTIONS (ONE OPTION IS CORRECT))
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  5. Let xi in [-1,1]" for "i=1,2,3,…24, such that sin^(-1)x1+sin^(-1)x2+…+...

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  15. If a,b,c are real positive numbers and theta =tan^(-1)[(a(a+b+c))/(bc)...

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