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Mathematics
Mathematics
Problem
Without using a calculator, decide which is larger:
arccos
(
1
3
)
\arccos\left(\dfrac{1}{3}\right)
arccos
(
3
1
)
or
arccos
(
2
3
)
\arccos\left(\dfrac{2}{3}\right)
arccos
(
3
2
)
. Give your answer and one–sentence reason.
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