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CBSE XII
>>
Math
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Inverse Trigonometric Functions
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Q)
Evaluate :
tan
−
1
(
1
)
+
c
o
s
−
1
(
−
1
2
)
+
sin
−
1
(
−
1
2
)
(
A
)
3
π
2
(
B
)
3
π
4
(
C
)
−
3
π
4
(
D
)
−
3
π
2
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