2番の解説で、なんで4分の3πは1になるのか教えて欲しいです

B5 三角関数(20 点) 関数y= sin9ーcxs@+2sin@cos 0+1 がある。 また, x=sin0-cos@ とおく。 (1) 0=号のとき、yの値を求めよ。 (2) xをrsin (@+«) (r>0, ー元Sa<r) の形で表せ。 また、 0semx のとき, xのと 大 り得る値の範囲を求めよ。 (3) yをxを用いて表せ。 また, 0%0系nのとき、方程式 y=k を満たす@が存在するよ うな定数えの値の範囲を求めよ。

どれが正しいのかと理由を教えてください！

Vocabulary 日頻出語量問題90頻出の形容詞① 26分 7 次の空所に入れるのに最も適切なものを選び, 記号を○で囲みなさい。(各2点) No.43 O Is it ( ) for you to go to a movie with me tomorrow? ア convenient イ useful ウ ウ free able エ No.44 (2 Michael is ( ) of playing both the violin and the trumpet. ア capable ウable イ possible No.45 3 Tokyo has twice as ()a population as that city. イ ゥ able enable エ ア much イ large pa エ, high )in that we are both very fond of this brand of coffee. ウ many No.46 の We are ( ア alike bro イ ウ ウ indifferent エ resembling Common 20snis o No.47 5) I am living near the road where traffic is very ( ) all the time. ア heavy イ ウ ウ plenty エ large many od No.48 6 He is very proud of having got a ( sg 「アexpensive ) salary last year. イ much ウ wide エ high .0 ailed yodt deiaim ai noiiamueas xiodi.Lgausood lid adina

あってますか？ 英語の得意な方教えてください。 (初歩的な問題です。) 全部しなくても構いません。

[1] 時制 |1. When he got the letter, he ( Xburns 2 has burned /3) burned ) it without reading i> の had burned (独協大) |2. Many American high-school students do not know that the Civil War( takes place /③ 1ook place )Getween 1861 (and 1865> have taken place の had taken place (亜細亜大) 2 3.( )t a higher temperature than water? のHas milk boiled Is milk boiling Does milk boil Was milk boiling (江戸川大) 2 4. I don't like tea, so I( Ogenerally drink am generally drinking had generally drunk ) coffee for breakfast was generally drinking (関東学院大) 2 5.“Where is Peggy?" “She ( )a bath now." is taking 2 take ③ takes ④ took (京都学園大) 2 6. Do you think he( ) his father? is resembling の resembles with Oresembles ③ resembles to (同志社大) 27. Do you have any idea ywhat she ( tonorrow? il be doing 3 does ) when I call her had done was doing (聖心女子大) 28. Many young people go o university without any clear idea op what they are ( ) to do afterwards. の)goingir being ③ seeing ④ coming (大阪経済大)

あってますか？ 確認をお願いします。🙇‍♀️

[1]時制 7 2 go out shopping when you telephoned.) の 9. Iwas just( ① nearly (2 almost ③ About ④ close 金大一汁(南山大) 2 10. By the time she ( get 2 gets ) there, she will be happy again. ③ will get ① got (大阪電通大) 2 11. When spring ( フ, Im going to take up a new sport. 'will arrive is arrived is going to arrive Oorrives (立教大) 7 12. I don't know when he( ) tomorrow. 1 shall come 2 will come 3 come_Deomes で (創価大) 13. She told me she _would be here about six. Anyway, I'll tell you when she ( のcomes 発展 2 had come ③ will come 4 would come (立命館大) 2 14. I can't tell if it ( D is raining Orains ) tomorrow. has been raining ④ will rain (駒淫大) 2 15. The sign says that the police will take your car away if you ( )it here. 1 are going to park had parked ーよ友会園 Opark ④ parked (京都産業大) | 16. The weather forecast predicts whether it ( ) or not. will rain ② has rained ④ has been raining (関西学院大) 3 must rain 2 17. There is milk all over the kitchen floor because my wife ) the bottle. Dhas broken Y breaks is breaking の was breaking (摂南大)

まるつけお願いします。🙇‍♀️

[1] 時制 ) it ithout reading iz |1. When he got the letter, he ( Xburns 2 has burned /3)burned ④ had burned (独協大) 口 2. Many American high-school students do not knowthat the )Getween 1861 (and 1865> Civil War ( have taken place takes place ③10ok place had taken place (亜細亜大) 2 3.( 1/Has milk boiled )t a higher temperaturè than water? Is milk boiling Was milk boiling Does milk boil (江戸川大) ) coffee for breakfasb 24. I don't like tea, so I( Ogenerally drink am generally drinking had generally drunk 2was generally drinking (関東学院大) 2 5.“Where is Peggy?". “She ( )a bath now." O is taking ② take ③ takes_ ④ took (京都学園大) ) his father? 2 6. Do you think he ( Oresembles ③ resembles to is resembling の resembles with (同志社大) 2 7. Do you have any idea what she ( )when I call her tomorrow? ill be doing 3 does 2 had done was doing (聖心女子大) 28. Many young people go o university without any clear idea oD what they are ( ) to do afterwards. の)goingr@ being ③ seeing ④ coming (大阪経済大)

2番のmuchは［…よりもずっと〜］という意味で捉えるんですよね？ moreはどのような意味ですか？

1. The red racket [the black one / than / lighter / is ]. The red racket ighter than the black is one その赤いラケットは, 黒いラケットよりも軽い。 マミュースメント アーケード 2. My brother spent [ than / much / me / money / more ] at the amusement arcade. My brother spent _much more mohey than me at the amusement arcade. 弟はゲームセンターで僕よりもずっと多くお金を使った。 敏字)較扱)

比較 空欄に入る単語合っているか確認していただきたいです

3 日本語に合うように,[ ]内の語句を並べかえて, 英文を完成しなさい。 1. The red racket [the black one / than / lighter / is ]. hghter than その赤いラケットは, 黒いラケットよりも軽い。 The red racket the black iS one マミュースメント アーケード 2. My brother spent [ than/much / me / money / more ] at the amusement arcade. My brother spent _much more money than me at the amusement arcade. 弟はゲームセンターで僕よりもずっと多くお金を使った。 飲室 牧秘 3. Your skirt is[ shorter / mine / ten / than/centimeters ]! Your skirt is ten centimeter s shorter than mine あなたのスカートは私のより 10センチも短いわ! ホウェーレ 4. A baby blue whale [ as / is / as/ an elephant / heavy ]. heauy elephant is A baby blue whale aS aS an シロナガスクジラの赤ちゃんはゾウ1頭と同じくらいの重さだ.

あってますか？

口4.姉と似ているとよく言われる。(広島修道大) I amaft tald[ my s I resemble Gister。

あっていますか？

口4.姉と似ているとよく言われる。 (広島修道大) I am.aften.tald. I yesemble my. ister

比較 課題が出たのですが分からないので教えて欲しいです🙇‍♀️

3 日本語に合うように, [ 1. The red racket [the black one/ than / lighter / is ]. ]内の語句を並べかえて, 英文を完成しなさい。 The red racket その赤いラケットは, 黒いラケットよりも軽い。 マミュースメント アーケード 2. My brother spent [ than /much / me / money / more ] at the amusement arcade. My brother spent at the amusement arcade. 弟はゲームセンターで僕よりもずっと多くお金を使った。 秋 教拡 3. Your skirt is [ shorter / mine / ten / than / centimeters ]! Your skirt is あなたのスカートは私のより 10センチも短いわ! ホウェール 4. A baby blue whale [ as / is /as/an elephant/ heavy ]. A baby blue whale シロナガスクジラの赤ちゃんはゾウ1頭と同じくらいの重さだ。