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kemomimi_oukoku's profile
けもみみおーこく公式
けもみみおーこく公式
けもみみおーこく公式
@kemomimi_oukoku

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けもみみおーこく公式

@kemomimi_oukoku

■個人・企業問わず全ての依頼受付を停止しております■【公式イラスト】羊箱様(@sheepbox)【公式ハッシュ】 #バーチャルのじゃロリ狐娘youtuberおじさん #バーチャル猫耳魔女っ娘youtuberおじさん

けもみみおーこく
nekomasu.wixsite.com/kemomimioukoku
Joined February 2013

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    1. けもみみおーこく公式‏ @kemomimi_oukoku 40m40 minutes ago

      三角関数は「ある直角三角形において、角度θと辺の比率が対応関係にある」ってことを示していて、三角関数に長さの概念はないのに「半径1の円周上に存在する三角形のみについて考える」という前置きすらなく「X = cos30°」って置くのかなりハイレベルじゃない? 少なくとも自分は理解できなかった。

      12 replies 78 retweets 218 likes
    2. Hito@映画良かった…。‏ @sakugenbou 34m34 minutes ago
      Replying to @kemomimi_oukoku

      斜辺の長さが示されてないのに底辺の長さを求められてるってことです?

      1 reply 1 retweet 0 likes
      けもみみおーこく公式‏ @kemomimi_oukoku 30m30 minutes ago
      Replying to @sakugenbou

      三角関数ここが分かりづらい 1.そもそも「長さの話」をしていない。三角関数に長さの概念はない。 2.1にもかかわらず、説明する時は「1の円周上に存在する直角三角形についてのみ考える」という前提があり、長さが定義されてる。 3.cosθという概念が実数と等式で結ばれる →本質が見えづらい

      9:17 AM - 24 Oct 2018
      • 11 Retweets
      • 15 Likes
      • いみの 俺くん語 だがすかい 鯵坂もっちょ🐟 ☕️☕️ イケメンロボコニスト情報botやじー あど@The School Idol Movie ヒトを騙る海胆 ふみつき@ポンコツ信者
      2 replies 11 retweets 15 likes
        1. New conversation
        2. Yuki /jukʲi/‏ @Yuki_jukjis 21m21 minutes ago
          Replying to @kemomimi_oukoku @sakugenbou

          「斜辺が1の直角三角形」ではなく、「三角形の斜辺に対する底辺の割合」と説明するのがいいと思います。長さを長さで割っているので無次元の実数(割合)になります 円周率を「直径1の円の円周の長さ」ではなく「直径に対する円周の割合」と考えるのと同じです

          1 reply 9 retweets 35 likes
        3. けもみみおーこく公式‏ @kemomimi_oukoku 20m20 minutes ago
          Replying to @Yuki_jukjis @sakugenbou

          それです!!!そこが言いたかったんです!ありがとうございます。

          1 reply 0 retweets 3 likes
        4. 1 more reply
        1. Hito@映画良かった…。‏ @sakugenbou 18m18 minutes ago
          Replying to @kemomimi_oukoku

          三角比→三平方の定理により導かれる角度による直角三角形各辺の比 三角関数→角度をひとつの変数としてもうひとつの変数を三角比の数値で示したもの。90°以上や負の角度などにも一般化できる。 みたいなイメージでした。 関数の方ちゃんと勉強してないからイメージにズレあるかもですが。

          0 replies 0 retweets 2 likes
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