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Byju's Answer
Standard XII
Mathematics
Definition of Functions
If 0≤ x≤ 1,...
Question
If
0
≤
x
≤
1
, then
sin
{
tan
−
1
1
−
x
2
2
x
+
cos
−
1
1
−
x
2
1
+
x
2
}
is equal to
A
1
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B
−
1
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C
0
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D
none of these
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Solution
The correct option is
C
1
Substituting
x
=
t
a
n
A
We get
s
i
n
(
t
a
n
−
1
(
c
o
t
2
A
)
+
c
o
s
−
1
(
c
o
s
2
A
)
)
=
s
i
n
(
π
2
−
c
o
t
−
1
(
cot
2
A
)
+
2
A
)
=
s
i
n
(
π
2
−
2
A
+
2
A
)
=
s
i
n
(
π
2
)
=
1
Suggest Corrections
0
Similar questions
Q.
If
−
1
≤
x
≤
0
, then
sin
{
tan
−
1
1
−
x
2
2
x
−
cos
−
1
1
−
x
2
1
+
x
2
}
is equal to
Q.
If
0
≤
x
<
1
, then
sin
{
tan
−
1
1
−
x
2
2
x
+
cos
−
1
1
−
x
2
1
+
x
2
}
is equal to
Q.
s
i
n
{
t
a
n
−
1
(
1
−
x
2
2
x
)
+
c
o
s
−
1
(
1
−
x
2
1
+
x
2
)
}
is equal to
Q.
Assertion :Derivative of
sin
−
1
(
2
x
1
+
x
2
)
w.r.t
cos
−
1
(
1
−
x
2
1
+
x
2
)
is
1
,
for
0
<
x
<
1
. Reason:
sin
−
1
(
2
x
1
+
x
2
)
=
cos
−
1
(
1
−
x
2
1
+
x
2
)
for
−
1
≤
x
≤
1
Q.
If
cos
−
1
(
2
x
−
1
−
x
2
)
+
sin
−
1
(
y
)
=
0
then the value of
x
2
+
y
2
+
x
y
is equal to
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