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数学 高校生

紫で引いた線の 右の式がわかりません どのように出たか解説よろしくお願いいたします🤲

[角形 88 内接円の半径 (ⅡI) 09 C=90° をみたす直角三角形ABCにおいて, BC=a, CA=6, AB=c, 内接円の半径をrとする。 (1) c=a+b-2r が成りたつことを示せ . (2) 三角形の周の長さと内接円の直径の和が2のとき,cをrで 表せ. 87 も内接円の半径がテーマですが、違いは本間の三角形が直角三角 形であることです. このときは,内接円の半径は三角形の面積がわ からなくても求めることができます. こういうときに、 2つ覚える のはメンドウだから,一般の三角形で有効な 87 だけ頭に入れておいて1つです JIB! まそうと思ってはいけません。もし, (1)の誘導なしで (2)が出てくると、試験中 に解けなくなってしまう可能性があるからです. 精講 解答 (1) 内接円と辺BC, CA, AB との接点をB それぞれ, D, E, F とおくと, CD=CE=r だから, ポイント a-r 1 D r AE=b-r, BD=a-r ここで, BF=BD=a-r, AF=AE=b-r CrE AB=AF + BF だから, c=a-r+b-r よって,c=a+b-2r JAD 24ED!! 形① (2)条件と(1)より, a+b+c+2r=2,c-a-b+2r = 0 よって, 2c+4r=2 .. 演習問題 88 a-r r 145 r b-r A c=1-2rth-2+) (that's LeashB-08-2h+ Lb 22 斜辺の長さがcの直角三角形の他の2辺の長さを α, b, 内接円の半径をrとすると c=a+b-2r 3辺の長さが3,4,5の三角形の内接円の半径を求めよ. 第5章 C=ath-12 Jun

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英語 中学生

回答を解説含め教えて頂きたいです🙇‍♀️🙏

問題8 【思考・判断・表現】 (2X4=8) 次の(ア) (エ)の各対話文の AUBUL 選び、番号を答えなさい。 TREMOR TA anese persity, (7) Yuichi: Today is my grandmother's birthday.TJ EXTRINKOE Mary: Yuichi: She's seventy. voy list of enige m'I wolob sigosq ynom sinirit 1 Where does she live? 2 3 Who gave her a present? 4 (S) PHIA に適切なものを1~4の中から1つずつ ARTARSO TV stolor) -CER Setologors How old is she? 2 3 4 What's her name? GIWH pixaM traiano* ni slqos (1) Satomi: Oh, you are carrying a big box. Are you all right?b siqasi yobot stolosoto David: No. This is a little difficult. Satomi: Sure. Sviensque 1Sy snipibsn to baixo zow Mr. Smith: Tomoko: ptplegoria solom of oppo* sau of 1 Why do you want to go to the park?squa 2 3 How is the weather next Sunday? 4 Hoy o son mont blaosa boing ob3 silt erinud 1 Will you help me? enixiom 3 You won't help me. mozboinq Shoqot of amos terit stolosoris hib woll May I help you? 2 4 Do you want me to help you? 10000 tu8 bluos yen't yllonit brip brod yisy bsint yorT moqot ni ti (¹) Steve: What are you going to do next Sunday, Hitoshi? Hitoshi: I'm going to play baseball with my friends in the park. Steve: I see. Yob Hitoshi: Well, I'll do my homework at home. we smood stplooors, WW* ollsH yoteid eti tuoda of bstnow briD stalocoris How many students are there in the school? Is it easy for your friends to speak Chinese? How will you go there? Have you ever been there? SVIENSORS LITE SDN 11 nonpitosino* 9/102 When will you play baseball? What will you do if it rains? ant gr (1) Mr. Smith: Tomoko, I hear you are going to visit China with your friends this summer. Tomoko: Yes, Mr. Smith. We are going to visit a junior high school boins blov in China. ai doinW It is my second time to visit the school, but it is the first time for my friends. I made a lot of Chinese friends last year. So I'm looking forward to seeing them again.

解決済み 回答数: 1
英語 中学生

回答を解説含め教えて頂きたいです🙇‍♀️🙏

問題8【思考・判断・表現】 (2X4=8) 次の(ア) (エ)の各対話文の 3x0 選び、 番号を答えなさい。 HORS (7) Yuichi: Today is my grandmother's birthday. Mary: Yuichi: She's seventy. 1~4の中から一つずつ AXUCE OST) -NEER ŠPEJAT JSY uoy list of onion m'I wold ob alqosq ynom nint I Calplopori si bo od movs olish 1 Where does she live? 2 How old is she? 3 Who gave her a present? 4 ynoteid eti tuodo (S) What's her name? Why is chocolate mort trasllib ti stoloporls silm of oppo* sau ot batante osixeM (1) Satomi: Oh, you are carrying a big box. Are you all right? b slqos David: No. This is a little difficult. Satomi: Sure. EATONKON the first Japanese persoly siano ni siqos yobot stplooards saviensis isy DD snipibsm to brix o zow sqomus montslqosa boinsg ob3 silt erinud Snoqot of smoo tarit stolosorts bib woll 1 Will you help me? May I help you? 2 emixom 3 You won't help me. moz, bainqilis4 Do you want me to help you? sorls triguend tu8 bluos varit vllonit bad bror vsv bsint yanT noqot ni ti slom ot batnow bad stolosoris colate aviensqxs llite 20w ti pooltootroo* 9/02 1 Why do you want to go to the park? qua 2 3. How is the weather next Sunday? 4 () Steve: What are you going to do next Sunday, Hitoshi? Hitoshi: I'm going to play baseball with my friends in the park. Steve: I see. yab Hitoshi: Well, I'll do my homework at home. we amosad stolo Mr. Smith: Tomoko: Tomoko: Yes, Mr. Smith. We are going to ** in China. insianD (1) Mr. Smith: Tomoko, I hear you are going to visit China with your friends this summer. a junior high school ing to visit blow 9††A lay baseball? Loy When will you play What will you do if it rains? inain W 1 2 How many students are there in the school? Is it easy for your friends to speak Chinese? How will you go there? 3 4 Have you ever been there? It is my second time to visit the school, but it is the first time for my friends. I made a lot of Chinese friends last year. So I'm looking forward to seeing them again.

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英語 高校生

写真の問題がわかりません。。 教えてください!

10 15 5 B) Read the following e-mail, and choose the best answer to each question. From: To: Date: Subject: Dear Mr. Westbrook, Elaine McGee <E_McGee@kingsley.co.uk> Nicolas Westbrook <nic_westbrook@heymail.com> June 25 Fashion columns ((1X2) = 4 points × 2, (3) = 5 points) Hello. I'm the editor of Kingsley Press. I'm writing to ask you to write a column for our publication “SUNNY," a monthly magazine which has been providing useful information for middle-aged men so that they can lead their lives cheerfully and actively. I have read your fashion blog, and liked the pictures and descriptions., Each article was very understandable and told me you have good taste. Also, I was impressed with your extensive knowledge of art. Currently, there are a lot of middle-aged men who can't decide what to wear or are not good at shopping for clothing. If you wrote a fashion advice column, it would probably be a great help to our readers. We are planning a column series titled "Brush up your fashion now." I would like you to write a one-page column of about 400 words with a picture of coordinates monthly. I am offering you $100 per article, but I would like to discuss this and other details with you later. If your columns are popular, we will ask you to write other columns about art or movies. Please contact me if you are interested. Sincerely yours, Elaine McGee Kingsley Press

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