学年

質問の種類

数学 高校生

2番の赤線のとこでOHはOBcosθであるのでb→cosθでkb→にならない理由を教えてください、

3 ベクトルと図形 例題 356 円の接線線分の垂直二等分線のベクトル方程式 ** (1) 中心 C(), 半径の円C上の点Po(Do)における円の接線のベク トル方程式は (D)=rr>0) であることを示せ. (2) OA=a, OB=1,|a|=||=1, adik 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, T, 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. 考え方 このと M (1)円Cの接線は, 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 (127) を通り, BHに平 行な直線のベクトル方程式を求める と 解 (1) 接線上の任意の点をP(b) とすると, とは限らな Co⊥PP または PP=0 CP・PP=0 CPo-po-c, PoP = p-po, であるから, (Do-c)・(カーpo)=0 P(p) Po(po) P≠Po のとき, C(c) CPOL POP P=Po のとき, PoP=0& 010 (Po-c)• {(pc)-(Po-c)}=0 (poc)·(pc)-po-cl²=0 po-c =CP=r であるから,DC =2円の半径 (2) 垂直二等分線上の点Pについて, OP= とする.また, B から OA 平面会への垂線をBHとし、∠AOB=0 では、とすると, la|=1,|5|=1より, M M(12) 中 HX P(p) **OH=(cos OH=(cos 0)a=ka |k=d=1x1xcos=coso AG B(b) → ALARI これより、 BH=OH-OB=ka-1 (5)垂直二等分線は, 線分 OA の中点M M(1/2)を通り、 b=3&5 (6+5)-(-5)=(6+j)-(0² BH に平行な直線であるから,万=1/2a+t(k-1) DA OH = OBcos A =1・cos0=coso BH は,垂直二等分線 の方向ベクトル 注 中心が原点O(0), 半径1の円上の点Po (Do) における接線のベクトル方程式は,(1) い

未解決 回答数: 0
英語 高校生

(18)のthat's sorryとthat's too badの違いはなんですか

ess 駒澤大-一般選抜T方式 S方式 2022年度 英語 13 問題N 次の二人の会話を読み, 設問 (16-20) に答えなさい。 on eda od gaibrans A JaDry stool f'nesób yanət tadikasoiton bived A David: Hi Jenny! Are you okay? You don't look so well. yamebainid) hiva 8 Jenny: Hi David. I'm a little tired today. I haven't been sleeping very well lately. David: That's no good. Are you getting enough (le16do)? gnivad ei yrasta Jenny: I think so! I've been jogging for an hour a day six days a week. I'm training to complete a full marathon.sta tón tol aevig kvm 21 de A David: You're really jogging six days a week? Jenny: Yeah, why? mul olil abnuos Ji aus esizom sxil d'usob oda sauss 8 David: I think I know what the problem is. You need to get some more rest. aren't a professional athlete! nions-fast of abson are sauso98.0 (17) Jenny: You might be right. I'll try to relax a bit more. David: Hey, I have a good idea! Why don't we go to the movies tonight? That will be a good opportunity for you to relax and have some fun. (as-IS) VON Jenny: That sounds like a lot of fun, but I already have plans tonight. David: What a shame! What are your plans? C. study You RISU (18) Jenny: I'm going for a run. mis ned their fingers 16-20 Read the conversation above and select the best option for each question. their basiersbruction A BEATS A 16. Select the best option to fill in (16). D. work 28A.) exercise bak B. help otre Ineve tonosnog mahatoslqosq baimer of blind gaibling an outstrida is 17. What does David mean when he says, "You aren't a professional athlete!"? (17) A. She has the potential to earn money through sports. B. She is training too much for an amateur runner.lnu bas gnijaugaib ES C. She needs to find a sponsor. elda molto mal time in gnistme.A D. She needs to train harder. Det their wits' end pangan telitiaq a rol babaon at an doum as AS 18. Which of the following is closest in meaning to "What a shame!"? Job A (18) B. That's fantastic! Hool1970 A. That's a great idea! C. That's sorry! pode noiolai to D. That's too bad! wombbal 25 ●幼児の手の届か HIGHLIGHTER Keep out of reach of children. イン

解決済み 回答数: 1
英語 高校生

1部でもいいので丸つけお願いします🙇‍♀️ 特に番号の隣に印がついてるのは分からなかったものなので解説も付けてくれると嬉しいです😭

ばない 場合 E] -0 ても」という〈譲歩〉 の意味の場合は, no matter when SV で書きかえられる。 でも/いつ・・・ しても」 という意味の副詞節。「いつ・・・し Chowever +形容詞 [副詞] + SV は 「どんなに <形容詞[副詞]> でも」という意味の副詞節。 however が導く副詞節はすべて 〈譲歩〉 の意味なので no matter how ... で書きかえられる。 However[= No matter how] hard I studied, I got a bad grade. 「どんなに一生懸命勉強しても、私は成績が悪かった」 Practice) ① 英文中の空所に入る適切な語または語句を選択肢から選びなさい。 1. I met a girl on the street) ( ) used to live in my neighborhood. whom 2 who 3 where 4 which 2. This is the department store 1 which 2 where sudo oli oban 3. Picasso was a painter what 4. The house ( that 5. 6. The hotel ( 1 which 2 whose ris) roof you can see over 2 which Tavared savoln Undsend suomi T vi sebi liseyid daw ova 7. Vancouver is the city 1 which ) his grandfather founded fifty years ago. 3 what sach O 4 whose ideas were far ahead of their time. V orly 3 whom 4 which e] ni bina noriq2 ( ou can see over there is Mr. Johnson's. 3 who 4 whose wagen voy 4 on which dvig wor at in the hotel ) the conference was held is near the city hall. where 4 what 2 on which de Everes 10. I don't know the reason ( 1 which 2 why 3 in that ) I wish to visit this summer vacation. a 3 where danob liw VT, .09 never forget the day () I reached the top of Mt. Everest. on the clay. ➡093 which for which 3 which on on day 8. John remembers the day ( ) he left Japan. the de orad 3 which 0 where 2 when 9. The time will soon come ( which to I2 when ed what nomie ( ) [we can enjoy space "S mon3 what 0 travel. 4 where is et oliw wod 091 ) she suddenly quit her job. 3 how 〈 山梨学院大 > 4 when amolowW**) amos ct 091094 (T The lort i 4 wherever sloda) 101 ➡➡091 102 <国士舘大〉 of phel 092 <福岡大> 092 〈 名古屋経済大 > 東北福祉大〉 ➡094 ➡➡094 <東海大 > 10 関係詞 ➡094 **) ➡➡094 〈 淑徳大〉 91

解決済み 回答数: 1