Answer:
Given sin?1
(1 ? x) ? 2 sin?1x
[Let sin?1x
=
1 ? x = 1 ? 2
sin2
1 ? x = 1 ? 2x2
2x2
? x = 0
x(2x ? 1) = 0
x = 0 or
But x = does no
satisfy the given equation
hence Ans (c)
is correct.
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