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7. T<0<2, cos 0 =2sin 0+10, sine, cos e の値を求めよ。 ( 2点×2) sine= 4-5 cose= 3-5

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✨ Best Answer ✨

三角関数の相互関係より
(sinθ)^2+(cosθ)^2=1
これに
cosθ=2sinθ+1を代入して計算します

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