Mathematics
Senior High
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数学Iのこの問題を教えてください!
⑭次の図でcos Aを求めなさい。P89 例題 3~P91 問 6 を参照
14
次の図でcos Aを求めなさい。P89 例題3~
P91 問6を参照
(3点)
B
15
4
C
1"A
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