Mathematics
Senior High
ONが、なぜb+c分の2になるのか分かりません。教えてください🥺🙏🏻┏●
0
M
P
C
A
N
L
B
tc
1a
i OB=6. OC=àとする。
atb
=;
OM-. ON=, OF- 9
a
OP-
2
2
2
OL+OM 1
+5
22
a+ō+3)
2
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