ここってなんで2πじゃなくてπなんですか！！

基本例題 161 三角方程式・不等式の解法 (4) 合成利用 ①000円 0≦0≦²のとき、次の方程式、不等式を解け。 (alays (1)√3sin+cos0+1=0 020 (2) cos 20+sin 20+1>0 & 基本160 重要 166 指針 sin, cos が混在した式では,まず,1種類の三角関数で表すのが基本。 特に,同じ周期の sin と cos の和では、三角関数の合成が有効。 (1) sin, cos の周期は2π (2) sin 20, cos20の周期は であるから,合成して, sin (0+α) の方程式, sin (20+α) の不等式を解く。 なお,0+α など, 合成した後の角の変域に注意。 CHART sin と cos の和同周期なら合成 解答 (1) 3sin+cos0=2sin (0) であるから、方程式は 2sin (0+)+1=0 10212 sin(0+ 7) = - 1²/21 ゆえに oto=tとおくと、0≦O≦ぇのとき この範囲で sint=- =1/2 を解くと よって, 解は 0=t== π 6 ... この範囲で sint> - π 36 ≤t≤n+ (2) sin 20+ cos20=√2 sin(20+4)であるから、不等式は ―1を解くと 7 4 π √ sin (20+ 4 ) +1>0 ゆえにsin (20+44) > 1/12 4 5 9 Ist<r. r<isr 4 7 π A1 (8) t= 610 800 8 20+4=t とおくと,Oのとき≦t≦2x+ π 4 4 π, -π<20+ (E) + (1 -=-90 π 6 10 RM SA π 5 すなわち / 12/12/ ·≤20+ < T 4 3 よって,解は 0≤0<- π 2' 4"<0≤T にする 9 π 4 +90 ah 90 YA 1 O yA √2 0 4 7 2 6 6 YA 1 ---- y) 9 (S) A √2 4 0 π (v3.1) 0 1X -y=sint 5 (1,1) 一π 9 基本例 次の関数 2, 0≤6 (1) y=c 指針 解答 月 (1)

解いたのがあっているか教えて欲しいです。 G(１)、(3)とHが分からなかったので解説をお願いしたいです。

94 総合問題 次の各文の下線部のうち, 誤りがあるものを ① ~ ④ の中から1つ選んで記号で答えなさい。 (1) A feeding machine that designed to make life easier for older people 3 has won a top prize at an award ceremony. (2) Since this will be the last trip, you 3 may take 4whomever wants to go. (3) The girl has gone to Mexico City by herself 3 a couple of days ago to join her family. (4) Will you make a note of my phone number and get him 3 to call me when he will be back? (5) Ken changed his major Ofrom French to English, hoping 3 to find a job 4more easy. (6) The idea which one should know 3 one's immediate neighbors Ⓒhas died out in large cities, but still lingers in small towns. (7) Turned suddenly, with tears in her eyes, Mary ran out of the room without saying a word. (8) He wanted to help her out, but whenever he asked about 3 her past, she avoided to answer his questions. UNACHA E 次の文の中から文法または語法上誤っている英文をそれぞれ1つ選び記号で答えなさい。 (1) He must have become very sad at the news of his father's death. ? You had not better read such an obscene book. 3 We cannot be too careful in choosing our friends. 4 As a university student, I would often visit the museum. (2) They say that he is known to everybody. 2 He is said to have lost his fortune. 3 He is laughed by his friends. 4 Coffee is sold at that store.

It （☜）is no use crying over spilt milk . It （☜）was a truly awful sight watching the numberless little wooden houses catching fire one af... Read More

回答お願いします！

(1) このレストランは10時閉店です。 This restaurant at ten. (2) このコンピュータは注意深く使われなければなりません。 wisya houmot This computer Must be used carefully. (3) バターは牛乳から作られています。 Milk is guilas ossatni bajes1 butter.

問3の(1)は go でもいいですか？ 答えにはvisitと書かれていました。

対話文 ■平成25年度問題 3 次の英文は, 明子 (Akiko) と拓也 (Takuya) , グリーン先生 (Ms. Green) , 放 課後に会話をしている場面である。これを読んで、後の各問に答えよ。 解答は,各問の答 の欄に記入すること｡ Ms. Green: Akiko, what's in your hand? Akiko : [1] I'll take it to the kindergarten next week. Takuya : We'll go there together. Ms. Green: Oh, that's nice. I've been to a kindergarten to teach English before. Young children like picture books. I think they will enjoy yours. Akiko : I'm glad to hear that. [2] There is one on every page. Ms. Green: Akiko, you know what young children like. Well, what are you going to do, Takuya? Takuya : I want to do something active with the children, but I haven't decided yet. Ms. Green: Let's see. Takuya, ( playing, to, how, soccer, about ) with them? You are good at it. Takuya Akiko Takuya Ms. Green: I don't think they can use it because the ball may hurt them. Akiko : A small and soft ball is better. [4] It's easy. : That sounds nice. : Shall I show you how to make the ball? It's (of, made, ball, by, a`) milk cartons. Takuya Akiko : That's a great idea. I'll take my soccer ball there and use it for them. : Wait. [3] They were using a small and soft one. : Really? I didn't watch the program. My soccer ball may be too big and too hard for young children. Takuya : Yes, please. Thank you, Ms. Green and Akiko. You've taught me important things. I have to know people's wishes and what they can do. When we do something for people, we should understand such things. Ms. Green: I agree. (E) kindergarten.. ･幼稚園 are good at ~•••~が得意である hurt- ･･傷つける active・・・・・・ 活動的な ･硬い hard. milk cartons ・牛乳パック

何故made ofになるんですか？😵😵

1番の答えを教えてください！

[1] Reading Comprehension 次の英文を読んで,あとの問いに答えなさい。 Hi. I'm Emily, Mark's mother. Let me tell you how we (a) raise our babies. After we mothers lay our eggs, we go out to sea to get food for our future babies. The fathers keep the eggs warm alone for nine weeks without eating anything! When the eggs hatch, and if we have not yet returned, the fathers give our babies a nutritious white liquid. It is called "penguin milk." (b) They squeeze (c) it out of their bodies to feed our babies. When we return with food, the fathers can finally go and get their own food. However, some do not reach the sea because they have used up all their strength. They sacrifice themselves to bring up our babies. 1. 下線部(a)の raise とほぼ同じ意味をもつ語句を本文から抜き出し,2語で書きなさい。 [ 日 1. 2 2

英語の不可算名詞について質問です。 chocolateは可算名詞でもあり不可算名詞でもありますが、板チョコの状態だったらpaperと同じ要領で不可算名詞になりますよね。チョコが液体（湯煎などで）のときも不可算名詞になりますか？あと、チョコレートのように可算名詞にも不可算名詞... Read More

( )に入る言葉を教えてください！

22 4 3 下の語群の語句を必要に応じて適当な形に直し、各文の空所に入れなさい。(語句は一度しか 使えません) ) by his students. ) the clothes before you buy them. -) his mistake. 1. Mr. Green is ( 2. You can ( 3. Do not ( 4. The ground will ( ) fallen leaves in autumn. <語群〉 [turn up / look up to / be covered with / laugh at / try on ] (各2点) 下の語群の語句を必要に応じて適当な形に直し、 各文の空所に入れなさい。 (語句は一度しか 使えません) 1. I'm worried that so much food is ( 2. We have found that milk can ( ) each day. ) many different things. 3. While I was walking around the town, I ( ) Bob. 4. She wants to ( ) her children in a quiet countryside. 〈語群〉 [ throw away/come across / bring up / make into / put on ] (各2点)

高一の不定詞の問題です。教えて下さい。お願いします。できるだけベストアンサーにします。

Fill in the blanks. 1) あなたがその試験でよい点数を取るのは簡単なことです。 It is easy ( ) ( ) ( 2) 家にさいふを忘れるなんて、あなたは不注意でしたね。 It was ( ) you( 3) 木村先生は生徒にたくさん質問してもらいたいと思っている。 Ms. Kimura ( ) her students ( )( 14) 母は帰りに牛乳を買うように私に言った。 My mother( )( )( ) ( 5) 両親は私がひとりで旅行をすることを許してくれない。 My parents won't ( ) ( (▶2-1, 2) ) get a good score on the exam. ) leave your wallet at home. ) a lot of questions. ) some milk on my way home, ) travel alone.