Mathematics
Senior High
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0≦θ＜πのとき、
sinθ－cosθ＝√2sin（θ－π/4）ですか？？
＝√2sin（θ＋7/4π）ではダメなんですか？？
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0≦θ＜πのとき、
sinθ－cosθ＝√2sin（θ－π/4）ですか？？
＝√2sin（θ＋7/4π）ではダメなんですか？？
Users viewing this question
are also looking at these questions 😉
ありがとうございます。