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English Senior High

16はなぜAではだめなのでしょうか。 そして17の下線部のlikeは「好む」という意味で取ってないと思ったのでAにしたのですがどういうふうに解釈すればいいですか、、😭

4 Jim: (Questions 16 to 22) Read the conversation and select the best option for each question. Clerk: Can I help you? Yeah thanks do you have this blue shirt in a bigger size? I can only see “smalls” and "mediums" on the shelves... Clerk: Let me see... Sorry, but "large" is sold out. We don't have many long-sleeved shirts left because it's the end of winter, and that particular style has been popular. But we have it in an "extra-large," would you like to try it on? Jim: That sounds like it might be too big... Clerk: To be honest, these are slim-fit shirts, so an "extra-large" is more like a "large" in other styles. Jim: Oh really? OK, let me try it on... You're right, the fit around my body is perfect! But the sleeves are so long they cover my hands! Can you recommend anything else? Clerk: Hmmm... Do you mind if it's a different style? Jim: ( 16 ) I want a blue shirt, but apart from that I don't care much. Clerk: In that case, what about this short-sleeved blue shirt? It's "large," and it's from our Spring Collection. Jim: (17) Well, I know I said I didn't care much, but I'm not a fan of collars with buttons. I feel like I should be wearing a tie with those ones! Clerk: Ah, I see. Well, how do you feel about a patterned shirt? We have some nice blue shirts with stripes, dots, or flower designs. Jim: (18) Clerk: Sure. Here is a light blue one with thin stripes, and over there we have a dark blue one which comes in thin or thick stripes. 1:1-4h thick strines but that one only comes in dark blue, right? ined light

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Mathematics Senior High

ベクトルの問題です。(2)でOHベクトルが(cosθ)aベクトルになっているのですがこれはどういうことですか?

例題 C1.34 円の接線, 線分の垂直二等分線のベクトル方程式 [考え方 **** (1) 中心 C(), 半径rの円C上の点Po (p) における円の接線のベクト ル方程式は (po-cp-c=r(r>0) であることを示せ (2) OA=a, OB=1,|a|=|6|=1, db=k のとき, 線分 OAの垂直 二等分線のベクトル方程式を媒介変数tとa, b,kを用いて表せ ただし,点Bは直線 OA上にないものとする. (1) 円Cの接線ℓは, 接点P を通る半径 CP に垂直である. このことをベクトルの 内積を用いて表す. (2)B から OA への垂線を BH とする. 線分 OA の中点M (12/22) な直線のベクトル方程式を求める. 解答) (1)接線上の任意の点をP(D) とすると,=1+P CPPP または PP=0 Po po 塗のであるから, CP・PP=0. を通り、BHに平 01 P≠P のとき, CP_POP P=Pのとき、 Pop=0 ESS Columr 平面 OA O の位置 の形て この 斜交 交座 基本 1と CPopo-c, Pop=oより、 Po-c -po=0 (poc)·(p-c)-po-c)}=0=1 po-cp-c-lpo-c|2=0 |po-cl=CP=r であるから、PCD=29) (2) 垂直二等分線上の点Pについて (12) 点 円の半径 30 OP= とする.また, B から OA ② への垂線をBHとし, ∠AOB=0 とすると,|a|=1, |=1 より,|AJ09+ k=d1=1×1xcos0=cos0 A(a) HX P OH= (cos0)a=ka d/=B (6) これより, BH OH OB=ka-18 = BH は,垂直二等分 BH に平行な直線であるから,b=za+t(ka-b) 0812 垂直二等分線は,線分 OA の中点M (12)を通り, → 線の方向ベクトル JE 9867/8-2/12 交

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