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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

`abs(a) le 1/sqrt(2)`

B

all real values of a

C

`abs(a) lt 1/2`

D

`abs(a) ge 1/sqrt(2)`

Text Solution

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The correct Answer is:
A
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