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Mathematics
Mathematics
Problem
Which of the following ordered pairs lies on the graph of
y
=
arccos
x
y=\arccos x
y
=
arccos
x
? a)
(
1
,
π
)
(1,\pi)
(
1
,
π
)
b)
(
0
,
π
2
)
(0,\tfrac{\pi}{2})
(
0
,
2
π
)
c)
(
−
1
,
−
π
2
)
(-1,-\tfrac{\pi}{2})
(
−
1
,
−
2
π
)
d)
(
1
2
,
π
6
)
(\tfrac12,\tfrac{\pi}{6})
(
2
1
,
6
π
)
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