Mathematics
Senior High
なんで、－sinπtになるんですか？
[一ダ
ァ UIS
1*一和
UHHI 4
(②⑳ ター1=7とおくと ァ*ー1のときた>0
sinzターsin (7填1) ニsSin(r十の ニーSin 7/
よづで に
H Sin ー ーSin Z7
Pt ィー1 Hm の
=lim F (- Sin 7
7っ0 旭/
ニーチ
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