Mathematics
Senior High
Resolved
3行目→4行目ってどうやって変形していますか？
2
(2) Sisin(1/nt++) at
=[-
3
2π
-COS πt+
3
19
COS
T-COS
2π
12
11
12
2(-2sinsin)
70
·(-
1 √3
3√6
2
AT
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