149.2 tanθを求める過程に問題はないですか？ またcosθを求める過程はこれだとダメですよね？？ （cosθ>0とは限らないのにそうだと決めつけて計算してしまっているように振り返った時に感じた。）

234 基本例題 149 2倍角、半角の公式 (1) << sin π (2) t=tan 解答 7/<0< 2 指針 (1) 2倍角、半角の公式を利用する。 また sin 20, tan- 209 ゆえに 0 のとき、次の等式が成り立つことを証明せよ。 2 18000 182 sin0= (1) cos20=1-2sin²0=1-2･ << πであるから よって cos 20, sin20, tan =12123のとき, 5 の値を求めるには, Coseの 必要になるから,かくれた条件 sin'0+cos²0=1 を利用して,この値も求めて 0 (2) 0=2. であるから, 2倍角の公式を利用。 tan0→cosl sin0 の順に証明する tan と cose が示されれば, sin は sin0=tan Acose により示される 。 tan 2t 1+t², (2) tan 0=tan 2. cos0=-√1-sin20 = 0 2 0 2 sin20=2sinAcos0=2. <0よりであるから 2 1 1+tan²= 0 S2. 2 COS よって cos0=cos2･ 1-cos 1+cos 0 2 tan から cos0= 1-tan²- 31² 5 0 2 0 2 20 2 ゆえに sin0=tanocos0= = COS 2 =2cos' --√√₁-(²³)² = 2.³-·-(-3) = -4/5 5 5 25 =1- 0 2 2t 1-t² 0 2 1-t² 2t tan0= 1+2, can 1-t² = 18 7 leden 20 25 25 BAJAR com 5+4 5-4 -1= = 0 tan o na 2 2ie-4 ata and 5 n 424 s 2t 1-t² 1-12 1+12 =3 (t≠±1) 1 + tan[] 2 1+ t² 0 2 ->0 2t 1+t² 191/202 -1= の値を求めよ。 200 1 1+t2 1-t² 1+t² (t≠±1) S=phieS+1=S p. 233 L は第2象限の角であるか 5 cos 0<0 1+ 1- 検討 sin=scos 2 5+4 5-4 COS10/2=cとおり と 0 tan-2-1-2 これを式の右辺に代入して ps2+cz = 1 などから、左 導くこともできる。

接続詞様態のasと関係代名詞asの非制限用法は何が違うのですか？ As we all know, however, we can gain knowledge without being taught. このasはどちらにも取れるように感じました。 よろしくおねがいします！

「,well behind 」の部分の構造、意味を教えてください。

[Review] Back in the late sixties, thinkers on both sides of the Atlantic were troubled by problems which may seem strange to us today: they were worried that the leisure age which they believed was fast approaching would leave people with too much time on their hands. They were worried that the work ethic was losing its grip on a new rebellious generation and they pondered how they would motivate people to work. They needn't have worried. The much-predicted "leisure age" promised by technology has not materialized. In fact, quite the reverse: people are working harder than ever. There is less leisure time and, most surprising of all, the very workers with the greatest bargaining power are choosing to work the hardest. The problem is the burnout of white- collar Britain. For over a century, the average number of hours spent working over a lifetime slowly declined in Britain. The historian James Arrowsmith has calculated that in 1856 our ancestors put in 124,000 hours over a 40-year working life and, by 1981, it was 69,000. There it remained for a decade, but in the early nineties it began to increase again. On average full-time British workers now put in 80,224 hours over their working life, and that figure rises to 92,000 for those on a 50-hour week, which is common among the self- employed, the skilled, and professional and managerial workers. Many are working the kind of hours that would have been familiar to factory workers in the middle of the 19th century. The only difference is that now it's the bosses who are more likely to be putting in the hours than those on the shop floor. Britain has followed a US model of all work, no play, in contrast to continental Europe. Full-time workers in Britain now work the longest hours in Europe an average of 43.6 hours per week compared with an EU average of 40.3. Even more marked is the difference in holidays between Britain and continental Europe; the UK has, on average, 28 days a year, well behind France with 47, Italy with 44 and Germany with 41. Add the difference in weekly hours and holidays and it amounts to the British working almost eight weeks a year more than their European counterparts. -

you think you have me fooled fooled はなぜfoolでは無いのでしょうか？

読んで,問 1~5k "You think you have me fooled, don't you, girl?" There was a silence, then Lucy asked: "What are yo "You can't hide it. You're sick again." cy "I'm not sick, Mom. I'm fine."

一枚目と 2枚目の3.4.5は合ってますか？違っていたら教えていただきたいです

3 Grammar Past continuous questions; reflexive pronouns) 3.29 Simple past Reflexive pr Did you hurt yourself? Yes, I did. A Past continuous Were you skiing with a friend? No, I wasn't. I was by myself. What were you doing (when you fell)? I was talking on my cell phone. What did you do? I called for help. A Complete the conversations with reflexive pronouns and the simple past or past continuous of the verbs given. You He She We They 10° qu Al 1. A What's wrong with your finger? Did you cut yourself? B Yeah, I accidentally cut myself with a knife. A Oh, Did you make (make) dinner? 2. A My father hurt_himself____ at the gym. B That's too bad. Did__he_life (lift) weights? A Yeah. A lot of people hurt themselves on weight machines, I guess. in

教えてください

定を表すこと glon you bobson 9 328 911 4 [ ]内の語句を参考にして, 日本語の意味に合う英文をつくりなさい。 back. (1) だれかが私の宿題を手伝ってくれたらなあ。 [wish, someone, with ] aca-ce 01 日本語の mmlaylice thishwisen Tip.youras linna fon (2) 彼女の助けがなかったら、 彼は今の仕事を見つけられなかっただろう。 [without, present ] moovib satte vi sdi stoted gnol 90-3 If BCD (学習院大) .... Jarlinu ton swi (3) 雨があれほどひどく降っていなかったら, 野球の試合は行われていたかもしれない。 THEWS [2] JOJ ****0008 bon em Jog deussy svn [it, rain, might] (福岡女子大) ** ... stoled vool -Surv 37

どなたか教えてください

EXERCISES 仮定法 1 日本語の意味になるように,空所を補い, 英文を完成させなさい。 (1) 雨が降っていなければ, 歩いて家に帰るのですが。 AB namun) (on of citome if it ( JasmaT We ( alailad aupinila Calgar parto Sqương VuM ✪ and Toqmi a'il © ) (**) Chinese, I ( TUIf she ( (2) 彼女が中国語を話 Chinese, I ( her right away. Lab ●● (3) エミリーの電話番号を知っていたら、 彼女に電話できたのですが。 Tiar batasgayne todiat yM・ (863338x bluoda) If I( ) Emily's phone number, I (int)) (install) her. (4) もし彼が注意深かったら, そんな間違いをしなかっただろう。 ) (soslar) careful, he ( If he( ) ( 待ちだっatpillinoshious of mokaomi plqooq rod 2 日本語の意味になるように、英文を完成させなさい THE raining. ) ( ) such a mistake.

仮定法を使って解きます、分からないので教えて欲しいです

25-4 で 2 日本語の意味になるように、英文を完成させなさい。 (1) 彼女が今ここにいればいいのになあ。 I S おが間違っていた such a mistake. 一 hap ni plqosy rodio togear bluore ow alid 10 sondaymom einsbute odi jadi bemesa J1 CC I realizesyalled Hairlt to 65 &0 (L+V [2] Tolong biwy () slid) 1'nob (→ (2) 私たちが,昨日そのニュースを聞いてさえいたらなあ! (3)あなたがエリオットにその計画について話さなければよかったのですが。w altli sertt Basilaar 1 4 sair I STA-84.99 estral Serm (5) ショウタはまるでその事故を見たかのように話しました。 S Shota st balmoval or (Jr) bevoled eli _yesterday! 2 日本語の意味になるように 宛所を補い 10-15 tedt amosa 10 (4) その赤ちゃんは、まるで私たちの言っていることを理解しているかのように笑っています。副領主張 That baby is laughing ·ĆUÍTHETAMedi Ener womel fabib Ⅰ 10 Laos][***] image bluore 9Vf nex Tuni Elliot about the plan. the accident.

数B 数列です 展開して答えたらだめなのでしょうか？

列 151 IS n n n (1) (k²-3k+2) = Σ k² −3 Σ k+ Σ 2 k=1 k = 1 k=1 円 15 os 2 k=1 k=1 1 1 = n(n+1)(2n+1) −3.—½n(n+1) + 2n 6 6 = = 1 6 1 6 ==n(n-1)(n-2) (rea) catsled ne n-1 (2) Σ3k²=3Σ k² 130S n{(n+1) (2n+1)−9(n+1)+12} n (2n²-6n+4) =n(n-1)(2n-1) 7.3 (n-1){(n-1)+1}{2(n-1)+1} 終 Tixs 00 (5) ( \/\n(n+1)( 5 -n(n+1)(2n+1) のnに (n-1)を代 入する。 10

解説お願いします😿😿

discovered resembled called Sealand. establishing rights faced status Many people change countries during their life, but one man has (1) (2) by Roy's grief the rest of son and (10) heir took over in the sea to contain (3) that would be used to fight off invaders. After the war, the soldiers left these platforms and they were forgotten - until 1967. In that year, a British man, Roy Bates, one of the platforms and announced he had started his own country, This surprised people in the UK, who believed they had the (5) . Bates and (6) to leave the platform. However, Roy (8)_ himself by his own country. During World War II, the UK built a number of artificial platforms made a name for weapons to the platform. orders In 1968, a court decided that the UK had no power over Sealand. Just like other places with the that the platform was in international waters. of a country, Sealand, has its own stamps, coins, and passports. It is controlled 'Prince' Michael, and is home to a large Internet business. the people on the island (his family), (7) 6 15