Mathematics
Senior High
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h=bsinA になる理由を教えてください
次の図の△ABCで, 面積を S, 高さをんとすると
1
S=;ch
C
ここで,h= bsin A であるから
6
h
s-foxh-jexhuinA
1
-cxh=;cxbsinA
A
B
C-
112円
;bcsin A
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