Mathematics
Senior High
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途中式と回答をお願いします
3
3
問| 25 くa<で,くB<元で, cos a=
3°
π,
2
π
<B<元で, cos α=
2
2
, sinβ=
のとき,次の値
5
を求めよ。
(1) sin(α-B)
(2) cos(α+B)
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全然大丈夫です👌
ありがとうございます!本当に助かりました!