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Problem
Problem
Find the value of of
sin
(
2
cos
−
1
x
+
sin
−
1
x
)
\sin(2\cos^{-1}x + \sin^{-1}x)
sin
(
2
cos
−
1
x
+
sin
−
1
x
)
when
x
=
1
5
x = \frac{1}{5}
x
=
5
1
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