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Mathematics
Problem
For
x
x
x
in the domain of both functions, let
h
(
x
)
=
tan
x
cot
x
h(x)=\tan x\,\cot x
h
(
x
)
=
tan
x
cot
x
. Which of the following is
h
′
(
x
)
h'(x)
h
′
(
x
)
? a)
1
1
1
b)
0
0
0
c)
sec
2
x
cot
x
+
tan
x
csc
2
x
\sec^{2}x\,\cot x+\tan x\,\csc^{2}x
sec
2
x
cot
x
+
tan
x
csc
2
x
d)
sec
2
x
−
csc
2
x
\sec^{2}x-\csc^{2}x
sec
2
x
−
csc
2
x
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