Mathematics
Senior High
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(2)と(3)のやり方を教えてください!(>_<)

Answers

✨ Best Answer ✨

(2) 0
sin75=sin(90-15)=cos15
cos165=cos(180-15)=-cos15

(3) 1
cos70=cos(90-20)=sin20

ゲスト

ありがとうございました(*^^*)

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