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The trigonometric equation Sin^(-1)x=2Si...

The trigonometric equation `Sin^(-1)x=2Sin^(-1)a`, has a solution for

A

`|a|le1/(sqrt(2))`

B

all real values of a

C

`|a|lt1/2`

D

`|a|ge1/(sqrt(2))`

Text Solution

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The correct Answer is:
A
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