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Problem
Problem
The interval for which
sin
−
1
x
+
cos
−
1
x
=
π
2
\sin^{-1}\sqrt{x}+\cos^{-1}\sqrt{x}=\frac{\pi}{2}
sin
−
1
x
+
cos
−
1
x
=
2
π
holds (a)
[
0
,
∞
)
[0, \infty)
[
0
,
∞
)
(b)
[
0
,
3
]
[0, 3]
[
0
,
3
]
(c)
[
0
,
1
]
[0, 1]
[
0
,
1
]
(d)
[
0
,
2
]
[0, 2]
[
0
,
2
]
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