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数学 高校生

下線引いてるところの意味が分からないです。どこがαですか??

B2 基本例題 148点の回転 点P(3, 1) , 点A(1, 4) を中心としてだけ回転させた点をQとする。 (1) 点Aが原点Oに移るような平行移動により, 点Pが点P'に移るとする 点Pを原点Oを中心としてだけ回転させた点Q'の座標を求めよ。 reson (2) 点Qの座標を求めよ。 指針 , 原点Oを中心として0だけ回転させた点を 点P(xo,yo) π 3 Q(x,y) とする。 SATBOSSRICE OP=r とし, 動径 OP とx軸の正の向きとのなす角をとす ると x=rcosa, yo=rsina OQ=r で,動径 OQ とx軸の正の向きとのなす角を考えると, 加法定理により x=rcos(a+b)=rcosacosorsinasin0 = xo coso-yosin0 よってx'=rcosa+ 解答 (1) 点Aが原点Oに移るような平行移動により, 点Pは点 P' (2,-3) に移る。 次に, 点 Q'の座標を(x, y') とする。 また, OP'=rとし、動径 OP' とx軸の正の向きとのなす角 をαとすると 2=rcosa, -3=rsina 練習 ③ 148 π π 13 = 2.1/2-(-3). √3 2 =rcos acOS- π is food -r sinasin / TR 3 3+ 2+3√3 2 π y=arsin (a+1/25) = rsinacos24.5+rcosasin / 3 3 -3.+2√3-2√3-3 +2・ したがって、点Q'の座標は 2+3√/3 2/3-3) 2 (2) 点Qは,原点が点Aに移るような平行移動によって, 点Qに移るから、点Qの座標は y=rsin(a+0)=rsinacoso+rcosasin0=yocos0+xosin0 この問題では、回転の中心が原点ではないから,上のことを直接使うわけにはいかないの で,3点P, A, Q を,回転の中心である点Aが原点に移るように平行移動して考える。 (2+3√3+1, 2√3-3+4) 5 (4+3√3 2√3+5) から (1) 点P(-2,3)を、原点を中心として YA 0 p.27 基本事項 YA 4F Y Q (rcos(a+0), 1-2 I 3 [日 -3--₁ a Y x軸方向に -1, y 軸方向 に-4だけ平行移動する。 を計算する必要はない。 3 rsin(a+0)) P 0 12/3 I (rcosa, P' rsina) X I i ast P(x²) Q' x

未解決 回答数: 1
英語 高校生

5つの下線部の正しい訳を教えて欲しです。 至急お願いします🚨🙇

Unit 12 Change the World Basic A few years ago, an obesity* researcher at the University of Washington-named Adam Drewnowski ventured into the supermarket to solve a mystery. He wanted to (1) figure out why (2)poor people were more likely to suffer from obesity in America. Obesity is, as you know, mainly caused by taking in too many calories. For most of history the poor have typically suffered from a shortage of calories, not an excess. So why do the people with the least amount of money to spend on food tend to be overweight today? 目 Drewnowski gave himself a dollar to spend, using it to purchase as many calories as he possibly could. He discovered that he could buy the most calories per dollar in the middle aisles of the supermarket, among the towering piles of* processed food and soft drinks. 3 Processed food is, in the broadest sense, any food that is changed from its natural, raw state. But here, it refers to food which has been chemically changed by using additives* such as flavors, colors, preservatives*, stabilizers*, etc., or which has been combined with other foods in a manufacturing process. Generally speaking, if the ingredients* aren't “natural,” then we consider it to be ( 3 ). Drewnowski found that a dollar could buy 1,200 calories of cookies or potato chips, which are typical processed foods, but only 250 calories of carrots. Looking for something to wash down those chips, he discovered that his dollar bought 875 calories of soda (a processed food) but only 170 calories of orange juice. 5 As a rule, processed foods are more “energy dense*” than fresh foods: they contain less water and fiber but more added fat and sugar, which makes them both (4)less filling and more fattening. 5 These particular calories also happen to be the least healthful ones in the marketplace, which is why we call the foods that contain them "junk*.” Drewnowski concluded that the rules of the food game in America are organized in such a way that if you are eating (6) on a budget, the most rational economic strategy is to eat badly-and get fat.

未解決 回答数: 1
英語 高校生

よく分からないので教えて欲しいです!

pp.26-27 えんだ) pp.8.11 でいる ) ・続ける る場合 30 ) 補 1 各文の主語(S)には (1) Tom spoke slowly. (2) I walk with my dogs along the river. (3) The library opens at 10 o'clock. (4) Yesterday my sister played with her doll. (5) I go to school by bus. (1) I walk (2) My favorite dish broke (3) The concert starts 12 (4) We started EXERCISES (5) This magazine sells (6) She sold j ② 意味の通る英文になるように, AとBの点を線で結びなさい。 A (1) Nancy ( (2) Bill ( (3) Your explanation ( (4) This steak ( (5) She ( 3 [ ] の日本語を参考に、下の 成させなさい。 BE-TE 99 動詞 (V)には tus&SORT ) a musicianod 英語の語順 ① 810*** SERIKA ) good. ) very happy. を引きなさい。 ułodaw sizi wa Dweg variel (M ● Juada a sve trbuod radiom yM well in big cities. 3008-32 • my dogs every morning. (stic bill in the church at 7:00. . VaR MOOVP-T |内から動詞を1回ずつ選び、 適切な形にして、 英文を完 (A+101) yud (A+ o) Lavig ) right. smell / be / feel / look/become Loes&SKAA] Ewig sad yesterday. [悲しそうな顔をしていた] B the meeting. · her guitar last month. in two. atqulq 11 yud dow airl svg medial [ミュージシャンになった] [説明は正しい] [いいにおいがする ] [とても幸せな気分だった] @TN 50 (4) (a textbook / the teacher / on the desk/put). salenu bod obro (84) stem and ● 4 意味の通る英文になるように,( )内の語句を並べかえ, 全文を書きなさい。 (1) (broke/computer / he/ his). (2) (Chinese food / do / like / you ) ? (3) (news/heard / pleasant / some / Kenta). 4 目十両+ 9 ygged am absm sile in O IM mid Has ayewis Was av Dove 001+ 5 日本語に合うように)内の語句を並べかえ, 全文を書きなさい。 また, 完成した英文の文 型をS,V,O,C を使って答えなさい。 20 L 01 00028 amber 5H (g) )、21indo (1) 兄と私はその新しいテーブルをキッチンへ運んだ。 (the new table / my brother and I / into / carried / the kitchen). 0078 (0) Tudo G 1) indo si she (2) その作家の新しい小説はおもしろそうだ。 (looks / the writer's / interesting/ new novel). 文型

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英語 高校生

教えてくださる方お願いします!!至急です!! 長文が苦手で教えてください

26 Unit 4 長文問題 もしも時間を戻せたら? 1 Do you ever wish you ( ) able to change the past? If you had (2) that ability, maybe you would spend more time practicing soccer, learn the instrument that you always wanted to play, study harder for that big test, or try to save more money for the future. 2 What would you do if you had the ability to turn back the clock? This was a question which Mr. Woodall, a high school teacher in Philadelphia, asked his students. Mr. Woodall wanted to know what was important to his students but was pleasantly surprised to see the results. I think their answers will be very interesting to you, too. 3 Mr. Woodall expected to see answers (which were connected to the own good of the students, but (3) he was wrong. The majority of the answers (5)which he received from his students were for the good of others. 4 A very common answer he found was, "If I could turn back the clock, I would take back some things that I said to a friend." Apparently, many of the students regretted saying something (5) ) hurt their friends and wanted to change that. Surprisingly, close to 40% of the students answered this way. 5 Another common answer was about pets. If I were able to turn back the clock, I would spend more time with my dog," or "I would be nicer to my cat," were some common answers. Almost 25% of the students missed their pet very much and wanted to show more love. These pets included dogs, cats, birds, rabbits and other animals. 66 6 There were other answers about reading more books, studying harder, or eating less junk food. However, Mr. Woodall was quite impressed with his students and their concern for others. He decided to share all of the answers with his students, and the students enjoyed hearing the different answers. Mr. Woodall decided to try this activity with his students every year. By asking, he felt he would learn a lot about his students. Target ①関係代名詞 ②仮定法・間接疑問文 turn back (時計を) 巻き戻す pleasantly 心地よく expected to 〜するだろうと思う good majority , t take back 取り消す apparently どうやら~らしい close to 〜近く be nice to 〜にやさしい concern for 問1 (1) ( 〜への気遣い配慮 Pag 2 junk food ジャンクフード 問3 い。 ( 問 問 (4) (6) 1

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英語 高校生

至急!!!この問題が分かりません! わかる人教えください!問1から問10までお願いします🙏

Unit 2 長文問題Ⅱ ミツバチは女社会? 1 Have you ever experienced a bee sting? If you have, you may (1) not be fond of bees. However, they are very interesting and honeybee society is very similar to ours. Let's look at some interesting facts about it. 2 Honeybees live together in groups of 20,000-80,000 in a beehive. This group is call] a colony and the bees in the hive can be categorized into three types: a single queen, tens of thousands of worker bees and hundreds of drones. 3 A queen bee's job is to lay eggs all her life. Each day the queen bee lays around 2,000 eggs. The average lifespan of a queen is three to four years. Does the queen "rule" the colony? No. Her duty is simply egg- laying. In fact, the queen bee has a smaller brain than a worker bee. Target ①現在完了形 現在完了進行形 ② 名詞・冠詞 人称代名詞 ③ 受け身 (6) sting 刺すこと,~を刺す be fond of lifts honeybee ミツバチ be similar to ~に似ている beehive ハチの巣 colony コロニー categorize ~を分類する tens of thousands of 何万もの〜 drone 雄バチ lay eggs 卵を産む lifespan (5) 4 The worker bees are the largest population in the hive. They are all female bees but can't lay eggs. A worker bee's life is rather short. They live around 40 days. Their job is to keep the queen bee happy. They do all the work but change jobs as they grow. For about a week after birth, they mainly clean the hive. Sometime between five to sixteen days after birth, they usually take care of the babies and help to build the hive. When they become twelve to eighteen days old, they carry food. After that, they guard the hive entrance. When they are three weeks old, they fly out the hive, pollinate plants and collect food. If you're a drone bee, life is hard. You're [ bear ], live for a month or two, and then die. During that time, you're not a productive member of the hive-you can't collect pollen or help to look after eggs, like worker bees-and you can't even sting anyone. Drone bees live with one thing in mind: mating with a queen. When they're lucky, they (7) can, but they die soon after that. 5 (8) 6 Every bee in the hive has a part to play in the survival and success of their kind. Bees have been living like this for ages. They work together and live in harmony. rule ~を統治する duty. female 雌の rather かなり as ~につれて guard 守る pollinate 授粉する productive pollen E Poj (2) C (7) in mind 考えて mate with ~と交尾する success, ** in harmony 問 1 調和して、仲良く PLE (4 (E

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