Mathematics
Undergraduate
Solved
どうしてこうなるのですか？
詳しく教えて下さい
X
E,
'BC
cos 0 =
-
Va?+x?
E。
2
2
x
:Egc=
-Eg
Na?
,2+x
.2
x
Q
×ー
Va? +x?
2
2
Va?
4TEO
2
+x?
Q
X
4TE0
3
2
+x
Answers
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ありがとうございます