12791
9
2129
2941
2
334
3622
0
253
1858
2
153
1280
1
101
1563
1
92
1993
0
76
1102
0
61
801
0
54
962
0
52
926
15
51
942
4
47
593
0
37
915
0
36
1033
0
35
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Keyword(s): 余弦定理