Mathematics
Senior High
Resolved
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343 次のような四角形 ABCDの面積Sを求めよ。
(1) D
(2)
A
5
60°C
4
130°
3 B
350
B
5
A
/30 °
6
D
4
60%
C
B Clear OL
*(3)
7
B
A
60°
15
15
*346
*>
(3) S-AABC+AACD
1/1/2.8-5
.3.5sin 120° +
55√/3
8.5sin 60°
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