数学IIの質問です。 この問題の計算ってなぜ sin２乗θ＋cos２乗θ＝1を使うんですか？ またなぜルートをつけているのですか？ 教えて頂きたいです。

26 教p.135 2 αの動径が第2象限, βの動径が第1象限にあり, sina = cos β=1のとき, 次の値を求めよ。 (1) sin(a+β) (3) cos (a+β) 指針 相互関係と加法定理 cosa, sin β の値がわかれば, 加法定理により値が求め られる。径のある象限から, Cos a, sin β の符号を判断し､ 相互関係 sin'0+cos²0=1 を用いて, Cosa, sin β の値を求める。 cos a < 0 解答 αの動径が第2象限にあるから βの動径が第1象限にあるから sin ß>0 よって cosa=-√1-sin α = =- = 3 = 1 (2) sin(a-β) (4) cos(a-β) 3 5 3√5 +8 15 2 3 = sinβ=√1-cosep= (1) sin (a +β) = sin a cos β + cos a sin β -x²+(-√5) x4-6-45% 2 3 4_6-4√5 -X- 十 15 4 = 5 3 (2) sin(α-β)=sin a cos β-cos a sin β 6+4√5 15 (3) cos (a+β)=cos a cos β-sin a sin β 3 2 4 - (- √5) × ² / - / - / X -X 3 5 3 5 √5 3 (4) cos(a-β)=cosacos β + sin asin β 3√5-8 15 3¹

英語がとっても苦手で何が書いてあるか全く分かりません。 明日の朝提出しなければならないのでどなたか解いてください。お願いしますお願いします。

44 15 20 25 30 Lecturer 10 Class times Office hours* Classroom Textbook Reading Read the following passage and answer the questions. English Writing Core I 43 ► This course is for foreign students to learn basic academic writing skills. The course is divided into three classes according to the results of a placement test. ► The placement test is on Tuesday, September 2 at 9:00 in Bldg. 10 Room 1. ▸ After the test, students must visit the student office by September 9 to register. This is a half-year course, and students who have completed one level can enter the next level in the spring term without taking the placement test. Level 1 Level 2 Level 3 Prof. Smith Friday 9:00 a.m.-10:30 a.m. Friday 10:45 a.m.-12:00 p.m. Bldg. 12 Room 1 "Advanced Writing Strategies Level 1: This course introduces students to the basics of English academic writing. Students will begin by learning how to write a coherent paragraph and then apply this skill to writing a five-paragraph essay. They will learn how to create an effective thesis statement, topic sentences, introduction and conclusion, as well as how to organize supporting sentences logically. Students are required to submit one single-paragraph composition, one essay outline and two essays on pre-selected topics at the end of the course for assessment. | 43-45 英 Green Valley University, Autumn Semester Level 2: In this course students focus on gaining an in-depth understanding of the form and function of *argumentative writing and compare and contrast representative essays. Emphasis is placed on writing effective thesis statements and developing paragraphs. Students also learn effective citation, paraphrasing and summarizing skills. Reading academic articles to improve their writing style and vocabulary is a key feature of this course. Assessment is based on two short essays and a paraphrasing and summarizing task. 4 Bldg. 19 pre-selected 24 paraphrase Prof. Simpson Prof. Wheeler Wednesday 9:00 a.m.-10:30 a.m. Monday 10:30 a.m.-12:00 p.m. Wednesday 10:45 a.m-12:00 p.m. Monday 1:20 p.m.-2:50 p.m. Bldg. 10 Room 1 "Have Fun Writing" Bldg. 10 Room 5 "Essay Writing Skills" Level 3: For more experienced students, this course aims to develop advanced essay. writing skills. Emphasis is placed on taking a position in an argumentative essay, researching, evaluating sources and logically developing ideas throughout the essay Students will also learn how to effectively integrate a range of sources into their writing. Assessment is based on one long essay on an academic topic chosen by the student. (379 words) * office hours: 大学の研究室などで教員に面談が可能な時間帯 thesis statement: (エッセイの) 主題文 argumentative: Words & Phrases 32 9 Prof. 20 assessment 29 take a position 15 coherent 21 in-depth 31 integrate A into B 19 composition 24 citation 31 a range of~ Read the passage and put T (True) or F (False) in the brackets. (各2点) (1) Students cannot choose the level of the course they want to take. (2) Students who have finished the level 2 course can enter the level 3 course without taking a test. ( ) (3) All students, whichever level they are taking, must submit at least one essay on a topic chosen by the student for assessment. ) 2 Questions Answer the following questions. [1] Choose one word which has the same pronunciation as the underlined part of the following word from the passage. (4点) thesis a. beneath b. breathe c. worthy d. smooth [2] Complete the answer to the following question. "What is a placement test?" "It is a test to [3] Hiroshi wants to see the lecturer of the Level 2 course to ask some questions. Tell him what to do to see the lecturer. (6点) [4] Choose the suitable word for each blank. (1) Level 1 students focus on how to write logical and well paragraphs. a. devised b. organized c. known (2) Level 3 students have to make their opinion essay. a. correct b. decent c. clear [5] Choose the suitable phrase for the blank. "Level 2 students are required to fully understand a. what argumentative writing is b. how important it is to write an effective thesis statement c. what the basic structure of English academic writing is d. how argumentative writing is evaluated 3 Listening Quiz (1) a. Visit the lecturer at the specified time. b. Go to Room 1 in Building 10 by September 9. d. spoken d. different (5点) c. Buy the textbook during the specified period. d. Register at the student office by the closing day. (2) a. To learn how to organize supporting sentences logically. b. To improve their writing style and vocabulary. c. To create an effective thesis statement. d. To develop ideas logically throughout the essay. (各4点) Listen to the recording and choose the best option. in an argumentative (5点) 45 回 (各3点) 33

[偏微分方程式] 写真の境界値問題の答えが正しいかどうか分かりません。有識者の方、間違っている箇所があるか添削していただけないでしょうか？

偏微分方程式 gute). at gult). Q. C ERTILAR 17 Uzt) 0 =Vwater. 領域 +20,0000で解け、パラメータの 定義域はする。()は任意の微分可能な関数とする。 UGU= XWTH & DETEA (HILBE. - 11/01 - 10/08 2X= (w X FY dx また、 Xox)= Cilaječuz 12 (2a PAI は1つの解 Tro-Ge-wet. は1つの解 よってukat)はすべてのWについて足し合わせて、 u(x,1)= となるから. U (x, t) = となる。。 N 27C 200-(w (3x). 14 DO Acase 初期条件より ¿wx UGGE) 100 = Uces = to fome Alone con dw. Fy Fl. iw (x-ct) dw. (Acus) = C₁(w) · C₂(w₁) -iwx A (0) = . Ulare - care dx. =_ Lo za -iwu + L L Ucare-i due TW (R-CT) <-00 271 dw

なぜこのように求められるのでしょうか？？解説お願い致します。

水みつど 6. A glass U-tube open to the atmosphere at both ends is shown in the figure below. If the U-tube contains oil and water as shown, determine the specific gravity of the oil. .69% E. IAS al equipment 2016 Th S60;l=eriqeomis lecolarit 油みつど 99660.69 5 69 219wans srl evig bn 97 l obiani suzasną stuloads TH₂0 = 9.810KN = 981.2001g/m³ m² x=²4₂" x 0.3m /0.35 0.35 m Oil TIL V6 0.30 muasem 2i 19dmero muussy 6 eriqzos sool srit.694 Water 29 1.0.2 10³ 10g/m ³ x 0.3/0.35m 3 3.20 912251090157x103.ee at mang men abiani 922910 stuloads er stoluola oldmeda 8₁57 x 10² leg/m²³² Jiou frus 69. Seous 691 981. lcg/m³ howers a 0.8935 =0.874

この問題の解き方が、わからないです。SGは比重です。

water Find the pressure at the bottom of a tank containing glycerin under pressure as shown 200i1 = 2 13 tank? 9.810k 9,810 KN/m3 in the figure below: ba = N/m² 0.75= 110³ 23DSG glo = 1.25 1 グリセリン -20090650 kPacoll Glycerin 107 N P=50x1²³pa le motinu al gob1102 ensig (6)nosik pa to Sum²1 91T 1913 to h= 2m SriT motinu i ovods biuft grid to J 2 m 23 erli to 91022919 to 1 pa 69.7 kPa nenot lapitev ljod adT holls Pened nevío 21. 0.75x (woled pi PB = 50 kpa + 1-25 x 2m - kpa Al 6 9.8

微分の問題なのですけど解き方がわかる方教えてください😭

1. 定積比熱C,は au Cv≡ OT/v=const で定義される。 アインシュタイン模型の量子力学的内部エネルギーUは 1 U = 3Nahwo〈n> + 3Nahwo と求められた。 ここで〈n> はプランク分布 1 (n) = ehwo/kBT-1 である。これらの式を上式に代入し、 微分を実行せよ。

途中式含めて教えてください 分析化学です

A さんの血糖値を吸光光度法で測定するため、市販のキットを使用して以下の操作で実 験を行った。 「試験管に血液サンプル (10.0μL), 試薬A (250μL) 試薬B (50μL) を混合し、 20分 間反応させた。 生成したピンク色のキノン色素溶液を、 層長1cmのセルに入れ、 波長 505 nmで測定した。 その結果、 吸光度は0.909 であった｡｣ ① このキットの測定原理は、 グルコース 1mol から1molの過酸化水素が生成し、 2mol の過酸化水素から1mol のキノン色素が生成する反応 (下図を参考) を利用している。 ② キノン色素のモル吸光係数を 12600、 グルコースの分子量を180 とする。 問1 A さんの血糖値 (mg/dL) を Lambert-Beer の法則を用いて、 小数点以下第1まで求 めよ。 問2 同様の方法でBさんの血液サンプル (2.0μL)を測定したところ、 吸光度は0.455で あった。 Aさんの血糖値の何倍か。 有効数字2桁で求めよ。 問3 本法でグルコースを直接測定しないのはなぜか。 簡潔に書け。 問4 糖から生じる H2O2 がフェノールと定量的に反応し、 ピンク色の ア を形成す ることが本法の原理である。 このような方法をア 化法という。 ア に当てはまる語句を漢字3字で書け。 ①の反応例 Glucose + O2+H2O 2H2O2+4-AA + Phenol GOD POD Gluconic acid + H2O2 Quinoid dye +4H2O2

どうしてもわからなくて解答もないので教えて欲しいです

強く発音するところ (9か所)の○を黒く塗りつぶし, ポーズを置くところ(2か所) T.co. に/を書き入れ, CDを聞いて音読しなさい。 1-29 Read Aloud Love is one of life's greatest concerns for men and women, young and old. O ○○ O O O O O

答えを教えてください！ よかったら，根拠も教えてください

la vitbl Questions 4-7 refer to the following letter. January 10 Ms. Erin Murphy Customer Service Department Westcoast Airlines Major Miles Program 345 Brook Street Dallas, TX 75218 Dear Ms. Murphy, As per your request during our telephone conversation on January 8, I am sending you Los Angeles International Airport last December. Please note that my ticket was upgraded itinerary and ticket number for my recent roundtrip flight from JFK International Airport business class with a Major Miles Gold Class voucher and should therefore be eligible f full business class mileage credit. 62 Section Il over 15 years. I must confess that I find the new restrictions to your flight voucher pla I am a Gold member in the Major Miles program and have been a Westcoast customer 1 genuinely confusing. I fail to understand why the burden of proof for my mileage cred rests with me. Shouldn't this information be on your ticketing computer? This was my itinerary. MD My ticket number was #YB42565697. Departed JFK, December 22 at 10:20 for LAX Returned to JFK from LAX on December 29 at 16:40 My seat number was 14B. 7B My Major Miles number is # 04356721 (Gold Card). I sincerely hope that this issue will be resolved quickly as I am counting on my miles eame during this trip to upgrade my hotel room next May. Thank you very much for your attention in this matter. Sincerely Yours, Jarrod Watkins Jarrod Watkins 4. 5. 6. What does Ms. Murphy do? (A) She makes airline reservations. (B) She deals with unhappy customers. (C) She issues new tickets. (D) She upgrades people to business class. What is the purpose of this letter? (A) To upgrade his ticket to business class (B) To buy a flight upgrade coupon (C) To complain about his seat reservation (D) To receive more mileage credits How does Mr. Watkins feel about the new frequent flier program rules? (A) He would like them to be simpler. (B) He believes they are unfair. (C) He finds them to be convenient. (D) He hopes that they will benefit hold Card members more. Which of the following is NOT mentioned in the letter? (A) His ticket number (B) His frequent flier level (C) His credit card number (D) His flight information inq M:8 big en enthovenot cold w lar hud,mq 01X in jord is di Hal Unit 2: Letters, E-mails, & Text message chains 63

大学の英語の和訳問題です。画像一枚目の問題を2枚目のように訳しましたが、〜and not in a way that will affect the rate law.(後半部分)が解答を聞いても分かりませんでした。 なぜnotがenterにかかっているのか、どのように構文... 続きを読む

transformation on its own before anything else takes place. Second, because the final product 変族 起こる contains a hydroxyl group, water (or, in general, any nucleophile) must enter the reaction, but dao at a later stage and not in a way that will affect the rate law. The only way to explain this 2 non