どうしたらcosA=0になるかわかりません。 途中過程を教えてください。

(2) 円に内接する四角形 ABCD があり, AB=1,BC=√2,CD=√3, 大DA=2とする。 このとき, cos AとBD を求めよ。 〈類 埼玉大〉 9 (2) B (1) A B 2 ス・ 60° # 0 180° -0、 M 180°-A 2. 3 # D BC²=6²+4²-2·6·4·cos 60°=28 DHO .: BC=2√7 (BM=CM=√7) 42-AM²+(√7)2-2-AM-√√7 cos 0 6² AM²+(√7)2-2.AM √√7 cos (180° - 0) ①+②より) ● 52 2AM²+14 .. AM=√19 Doma 四角形 ABCD は円に内接するから ∠A+ ∠C=180° である。 BD²=2²+1²-2·2·1·cos A ① = ② より SA 8=30 2 cos (180°-0)=- cos 0 1 1 BD²=(√2)²+(√3)²-2-√2-√3 cos (180°- A) 2 cos (180°-A)= -cos A 5-4cos A=5+2√ 6 cos AA=²20 ? So. BEANBOR HACCos A=0, BD=√5 ALAQ

字汚くてすみません(><) be known 〜の使い分け教えてくださいー！！

このような This dance is known for its acrobatic moves such as head spinning.oreland I 「〜として 解説 be known for は「〜で知られている」という意味。 be known as ~ 知られている｣、 be known to ~「~に知られている｣とまとめて覚えておくとよい。 Question ( )に入る適切な語を ] から選びなさい。 1) This story is known ( ・ S to) almost every Japanese. ほとんど foras) an excellent cook. inions (I 2) Kenji's father is known ( 3) This city is known ( for / as / to swais! (& the trilt as for) its beautiful castle. 太日文舎の内部文 7 表理 ここでは its acrobatic moves

答えはないです。解説も軽く含めて教えて頂きたいです。

1300-30 の場合 pp.306.1 2 日本語の意味になるように、 関係代名詞を使って英文を完成させなさい。 19aang aid wonal inoble BC (1) 私はカフェで会う約束をしていた男性を探していました。 TI was looking for gaiteem srt is insesiq esw swoud toob I- (2) 私がオンラインで買ったジャケットはあまりよく体にフィットしませんでした。 The jacket the (3) 私には返信しなければならないEメールがたくさんあります。 Satu) ob I have ~ 60 37 ob of DISTIE 90 (4) 私たちはよくその公園を訪れたものですが,そこは美しいバラで有名です。 We would often visit that park, 関係代名詞として (5) 田中さんは,以前は俳優でしたが,今は作家です。 to baot ed Mr. Tanaka, bed> S ~) of at ad or loli sd 新 (~7 ob of tqß 96 b'o briod Ba to bisits ed TOUJNORE~) ~ 10 91656-od KERC auods auoixns-od (6) ボブはこれまでその少女に会ったことはなかったと言いましたが, それは本当でした。 Bob said he had never seen that girl before, Diw Tsilimsted. 5

TOEICの形容詞の問題です、答えを教えてください🙇‍♀️

Now You Try! 4つの選択肢から最も適切な選択肢を選び、文を完成させましょう。 --- area of the city. 1. This is a (A) fashionably (B) fashion (C) fashionable (D) fashions 2. The Sheldon Public Library is a place. (A) wonder (B) wondered (C) wonderful (D) wonderfully 3. Our gas bill was - last month. (A) expense (B) expensive (C) expensively (D) expensiveness -------- 4. Buses are usually crowded on ---- days. (A) rain (B) rains (C) rained (D) rainy 5. Mrs. Taylor grows vegetables in her garden. (A) beautiful (B) beautifully (C) beautify (D) beauty 6. All of the benches in the park have - designs. (A) original (B) originally (C) origin (D) originating 7. The price of food is very -- (A) reason (B) reasonable 8. The city is making a (A) create (B) creation -------- -------- right now. (C) reasoning (D) reasons plan for the downtown area. (C) creatively (D) creative 018 TOU proled verit READING CCheckLink noo ould erit US amani eldemudnu ton ena vert?

TOEICの副詞の問題です。答えを教えてください🙇‍♀️

ravel Now You Try! 4つの選択肢から最も適切なものを選び、文を完成させましょう。 1. The airplane arrived -- at the airport. (A) safely_(B) safe (C) safeness (D) safety ------- 2. The weather was fine for sightseeing. (A) perfect (B) perfectly (C) perfection (D) perfected 3. From the hotel, you can walk- to the beach. (A) ease (B) easiness (C) easily (D) easy novelamo tablius volu 4. Please check Mr. Clark's travel schedule ---- (A) careful (B) carefulness (C) care (D) carefully 5. The number of tourists goes up ------- in the summer. (A) greatness (B) great (C) greaten (D) greatly ----- ng the dones 6. Shuttle buses to the airport leave (A) regular (B) regulate (C) regularly (D) regulation ME SO 7. All trains are running very ------- this morning. (A) smooth (B) smoothen (C) smoothness (D) smoothly 8. The special tour to Hawaii sold out --- (A) quickly (B) quick (C) quickness (D) quickenlos ylla

なんでこうなりますか？？

BEA 2685 途中で割引した商品の利益合計から、仕入れ値を求める問題 ある商店では、 商品Pを40個、 商品Qを60個仕入れ、 それぞ れ仕入れ値に40%の利益をのせて定価を設定した。 (1) この商店で、 商品Pを定価で28個売った後、残りを定価の 10%引きにしたところ、 すべて売り切れて 8592円の利益が得 られた。 商品Pの仕入れ値はいくらか。 A 322円 B 369 円 C 400 FT D 1456 円 E 24 円 この問題で考えるのは 商品のことだけ 問題文の情報を取り出して 整理する F 600円 G 640円 H 698 P I 725円 J Aからのいずれでもない えるのは商品Pのことだけです。 商品Pに関す 商品Pと商品Q が出てきますが、この問題で考 る情報を取り出しましょう。 途中で割引しているところがポイントです。 制 引前と割引後に分けて考える必要があります。 情報を取り出すときに、簡単に出せる数値は、 そこで出してしまいましょう。 商品Pの仕入れは 仕入れた個数:40個 仕入れ値:x円 ( 求める数値) 途中までは、定価で売ります。 定価: 仕入れ値x円に 40%の利益をのせた 額なので、 x x 1.4 = 1.4x 円 利益の合計の 方程式を作る 答え 仕入れ値x円の40%なので、 0.4円 定価で売れた個数: 28 売れ残った分は、割引価が変わります。 売れ残った個数: 40-28 12個 売価: 定価 1.4x円の10%引きなので、 1.4xx 0.91.26 円 利益 売価 1.26x円から、仕入れ値3円を 引いた0.26円 定価と割引で得た利益は 40 個分の利益: 8592円 ここまでにわかった情報を使って、定価で売っ た分の利益と、10%引きで売った分の利益の合 計の方程式を作ります。 (0.4xx28)+(0.26xx12) = 8592 [個数] 106818 前菜の 利益 11.2x +3.12x = 8592 定価の 利益/ 仕入れ値は600円です。 x = 8592 ÷ 14.32 x = 600 TE F 000000

英検の過去問なんですが、答えが見つからない ので答えを教えてほしいです

(2) (1) A: Mom, I met a ( B: That's great. 1 famous (5) (6) 1 (18) Grade 4 (8) 2 次の (1) から (15) まで ( に入れるのに最も適切なものを 1,2,3,4の中から一つ選び、その番号のマーク欄をぬりつぶしなさい。 (3) A: When did the Sylvia Hotel open? B: In 1913. It's over a hundred years ( 1 many 2 quiet (4) A: Everyone is here, so we can ( B: OK. 1 visit Mary ( 1 misses day. (7) A: Your ( Ted made some friends at his new school, so he was ( thin 1 2 slow 3 glad Peter became a ( 1 member B: Thank you. 1 question Grade 4 2 next ) soccer player on the train today. 2 start 3 hard 2 bench ) to get a bird for her birthday. 2 picks 3 hopes 1 That's my dream. 3 I'll watch you. 1 Have fun. 3 Not yet. 3 tall 1 Did you make them? 3 Is it finished? Daughter: I will. 1 I'm hungry. 3 stay at home. 3 carry ) of the swimming club. ) is so beautiful! I love seeing the flowers in spring. 2 holiday 3 sound 2 ) the movie now. 3 salad 3 moved (17) Father: How was your band practice today? Son: ( ) We learned a new song. 1 I have a ticket. 3 You're right. I ( ) a bad cold today, so I couldn't have lunch with my grandmother. I was really sad. 1 kept 2 had Mother: Would you like a cupcake? Daughter: Yes, please. ( ) Mother: No, they were on sale at the supermarket. 4 thick (19) Girl: Thanks for studying with me today. Boy: ( ) I enjoyed it. 次の (16) から (20) までの会話について ( に入れるのに最も 適切なものを 1,2,3,4の中から一つ選び、その番号のマーク欄をぬりつ ぶしなさい。 (16) Girl: I love playing the piano. Boy: Do you want to be a professional pianist in the future? Girl: Yes. ( ) 4 old lazy 4 drop 2 After math. 4 No problem. (20) Daughter: Dad, shall I cut the vegetables for the salad? Father: Yes, please, but ( 4 follows He swims every 2 It's my guitar. 4 You can have one. 2 it's a fruit. 4 be careful. 4 towel 4 garden 2 It was fun. 4 It was on the radio. 4 rode 2 Will they be ready? 4 Are you late? (9) (12) Grade 4 (13) A: What can you cook? B: I like to make food from different countries. ( Italian food and Chinese food. 1 For 2 To (10) A: Did you meet the new English teacher? B: Yes, he comes ( 1 until 2 (11) A: What ( (14) 3 ) of dog do you want? B: I want a big dog because I love to go on long walks. 1 room 2 wind 3 kind (22) (15) A: Excuse me. ( B: That one is $10. 1 Where (23) After school, Chris enjoys ( listen to her funny stories. 1 talking 2 opening (24) 4級 354. 34 $18,73 Today, it will snow much ( and I will make a big snowman. 1 harder 2 hard (25) (21) 新しいくつを買ってはどうですか。 1 arplad I love riding my bike to the park, but my sister ( likes to stay at home. 1 haven't 2 doesn't Brush breakfast. 1 ) South Africa. He loves rugby. along 3 This is 10 みが 朝食を食べたら歯を磨きなさい。 (after 2 your 3 you 2番目 1 2 Why (4) 2 ( you buy 3 why 4 new shoes 2番目 4番目 1 2 5 My brother tomorrow. ) much is this T-shirt? 3 2 3 As スープをもっともらえますか。 have ( soup can 2 2 Grade 4 LI 856 次の (21) から (25) までの日本文の意味を表すように ①から⑤までを並べ の中に入れなさい。 そして、2番目と4番目にくるものの かえて 最も適切な組合せを1,2,3,4の中から一つ選び、その番号のマークを ぬりつぶしなさい。 ※ただし, ( の中では、夏のはじめにくる語も 小文字になっています。 2番目 2 over W 4 from 2番目 3 holding BEL はじ これは私の初めてのシンガポール旅行です。 (Singapore 2 my first 4 to ) with his teacher. 3 don't 2② 3 hardest 3 When ) than yesterday. 3 4 eat 5 teeth) 3 4 In 4 3 4 side ) example, (3) some more 3 (5 3 4 asking 5 trip) 5 don't) He likes to 4 isn't (4) (write 2 to 3 by 4 has 5 a report) 2番目 2 4番目 わたし あに あす 私の兄は明日までに, レポートを書かなければいけません。 4 too hard ). 4 How (51) My brother She 4 4番目 ⑤5⑤ - (3) (3) please? 4 3-0

答え合わせしたいため、わかる方解答教えてください🙇🏻

4 □001 基本 002 基本 005 [基本] 基本 003 009 010 004 008 [基本] 次の英文の( )に入る最も適当な語(句)を1つずつ選び, 番号で答えなさい。 I had a fight with Jun and now we ( ) to each other. aren't speaking 3 aren't to speak Day 1 月 月 日 解答時間( 解答時間( 日 動詞と文のかたちに関する問題 ① The secretary told me that Mr. Jenkins ( 1 goes 3 have been 3 is finished 5 will have been finished ☐007 I would rather walk than ( 904 take 3 took I am not sure if she ( 1 go 3 will go The new building ( ) by the time you graduate in 2015. 1 finishes 2 has finished 4 will finish I'm sorry, sir, but smoking is not ( ℗ permitted 03 permitting 2 aren't spoken 4 weren't speaking 006 The time of day just after sunset and just before night ( is call 基本 2 called 3 is called had seen 2 had gone 4 is being ) to Sri Lanka for study after graduation. 2 visiting 4 will visit U3 saw ) a bus. ) in this building. 2 permission (4 permit Kevin is such a diligent student that he ( 1 must have received 03 don't need to receive ) out to lunch and wouldn't be back until two. 2 had taken 4 to take Jane was very pale. She looked as if she ( A: Are you going home to your family for the New Year's holiday? B: I wish I ( 1 can ). But I have to stay in the city and work. 2 could 3 go 4 will ) such a low grade. 2 should be able to receive 4 can't have received ) dusk. 4 call 2 is seeing 4 seen ) $ ( 分( ) a ghost. WILURES 04 NA BA sa aa 122103 /40) 点 /40) 点 E VIGO < 慶應義塾大 > <獨協大> <東京医科大〉 <関西学院大 > 〈 南山大〉 LIQ <熊本県立大〉 SAYA <京都女子大> <高知大) <学習院大 > 2018-ANSHROO HAABERSTAR (***) STAATENSESBEST ☐011 012 □013 基本 030 □014 ** 015 □017 ☐019 020 But for the actions of a brave firefighter, I () alive now.vil(sets inter hor 1 am stulbomuni 2 hadn't been qu woda 4 wouldn't be 3 will be bib @ <日本大〉 blooda □ 021 ( ) that dinner would be served at the conference, I would not have eaten sandwiches on the way. If British shovic and uplol nirmolof werbe Taking/her 300l 2 1 If I know 3 If I were to know 2 Had I known 4 Should I know The population of that country is (ows) that of our country.daun ( 1 as large as three times 2 as large three times as 3 as three times large as 4 three times as large as Vintage For my taste, this soup needs to be a bit() salty. 1 as 2 few 3 many 5 less 4 than I quit my job two months ago. It was the () mistake I've ever made.az badedant gnitiew, wade 2 impossible sold moloca en 3 probable/ had/ offer/ for / 4 worst eneroun / it), we could not have edi galybusdam es basqa bloode uoy deiland wo 016 io al I'm not sure how long ( ) to deliver this washing machine. og 25 gumal 1 do you take 2 for taking you si 3 does it taken asuiaud beaed-sm4 it will take om at malam commo レアはアフリカの4倍を超える量のダイヤモンドを I cannot believe it. He would be the (ore) man to take bribes.es) diamonds prooed in impossible bstinu sdi ni ylio 2 least moose alalaittoyob tsdW eso 3 hardest 4 last aduni wilgo va huraueano el a mairg lo mlbite 008 ghean jadi seluug oe al mus guiad □ 018 I realized that my family was in danger, and ( ). 1 so I was 〈上智大 > DED 2 so did I ④ so I did 3 so was I mi法政大 distine sdt at gaib wzĀJA that noite):8(**) I will work next Saturday (S) necessary.w 1 by Jis 2 if a l'abinow 3 soabam ) IIA (d) Tradisi 2 (a) ( <大阪教育大 > <玉川大〉 ASO < 桜美林大 > SOJEN VECTOIS003CTOXX E It was ( ) we found the antique silver spoons. 1 what in Paris 2 in Paris that 3 in Paris which Shi aslil noy of 4 Paris in where of bovom og bed 900 bio siti (esmit lossis svubli 18 ② 次の各組の英文の( ) に共通して入る最も適当な語を1つずつ選び, 番号で答えなさい。 (a) He ( ) have missed his train. (b) Business has been thriving in the past year. Long (l) it continue to do so! 1 should 2 shall 3 might 4 may TEO <甲南大 > TEO 〈上智大〉 Aviator 600 Level 5

What she hated herself for most was the fact that she could no longer bear to be with her parents. という文で、最初の訳が「彼女が一番嫌いだったことは」となると習ったのですが... Read More

英検準2級ライティング 文法や単語の間違いなど減点対象になりそうなものがたくさんあると思うので教えてください、、！😭

QUESTION Which do you think is better for people, borrowing books from libraries or buying books at stores? boomsta 00) metrow ni beau nsito ton yldsdong gnil ziviTW GE