admin百科知識 2022-02-13 19:11:11 (sinα+cosα)^2化簡(sinα cosα)^2化簡網友廻答:匿名網友(sinα cosα)^2=(sinα)^2 (cosα)^2 2sinαcosα=1 sin2α網友廻答:匿名網友1 2sinacosa=1 sin2a網友廻答:匿名網友(sinα cosα)^2=(sinα)^2 (cosα)^2 2sinαcosα=1 2sinαcosα=1 sin2α網友廻答:匿名網友(sinα cosα)^2=1 sin2a db標簽 生活常識_百科知識_各類知識大全»(sinα+cosα)^2化簡
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