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Mathematics
Mathematics
Problem
Which one of the following statement is meaningless? a.
cos
−
1
(
ln
(
2
e
+
4
3
)
)
\cos^{-1}\left(\ln\left(\frac{2e+4}{3}\right)\right)
cos
−
1
(
ln
(
3
2
e
+
4
)
)
b.
cosec
−
1
(
π
3
)
\operatorname{cosec}^{-1}\left(\frac{\pi}{3}\right)
cosec
−
1
(
3
π
)
c.
cot
−
1
(
π
2
)
\cot^{-1}\left(\frac{\pi}{2}\right)
cot
−
1
(
2
π
)
d.
sec
−
1
(
π
)
\sec^{-1}(\pi)
sec
−
1
(
π
)
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