Mathematics
Senior High
これを計算して12になる途中式教えてください！！
= 50/2
D=30°, ZCDA = 90°
D
ļ
30°
EFE
HE
BCの中点をMとす
る。
AT-
とって
B
60
M
SL.)
a
= (2√5)² + (√6 + √5²) ² - 2.2√2. (√6 + √2) cos 60°
から
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