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The trigonometric equation sin^-1x=2sin^...

The trigonometric equation `sin^-1x=2sin^-1 2a` has a real solution if

A

`absa le 1/sqrt2`

B

`1/(2sqrt2) lt absa lt 1/sqrt2`

C

`absa gt 1/(2sqrt2)`

D

`absa le 1/(2sqrt2)`

Text Solution

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The correct Answer is:
D
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