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Trigonometry
medium
0:00.0
What is the value of
arccos
(
−
1
)
\arccos(-1)
arccos
(
−
1
)
?
A
0
0
0
B
π
/
2
\pi/2
π
/2
C
π
\pi
π
D
−
π
-\pi
−
π
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