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Mathematics
Mathematics
Problem
Arrange the following values in ascending order without actual calculation:
cos
18
∘
,
sin
70
∘
,
cos
40
∘
\cos 18^\circ,\; \sin 70^\circ,\; \cos 40^\circ
cos
1
8
∘
,
sin
7
0
∘
,
cos
4
0
∘
.
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