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Mathematics Senior High

答えは分かっているのですが解き方が分かりません今日中に時直さなければなりません。誰か解き方を教えてください

10次の余弦定理を完成してください。 A b 141辺の長さが2の立方体 ABCDEFGH において 辺 CGの中点をMと (1) 線分 AF, AM, FM の長さを求めよ。 (2) ∠FAMの大きさを求めよ。 2D B a cos A= b+c-a² 2.6.2 b2= a +C 22-zcacos B 11 △ABCにおいて, 余弦定理を使って指定されたものを求めよ。 (1) a=2,b=3, C=120° のとき,c (2)=1,b=√5,c=√2 であるとき, COSB の値とB (3) AFMの面積を求めよ。 H 以下の会話の流れから口にあてはまる数値を入れてください。 太郎: まず、 それぞれの三角形で三平方の定理を使うと、 線分の長さが 求められそうだね。 花子:そうすると、 △ AEFに三平方の定理を使うと E F 2 AF= ア 42 となるよね。 同じように考えて、別の三角形で計算すると AM= イ 3 FM= ウ 255/ が求められた! 太郎: AFM に余弦定理を使うと (1) (2) cos B = 4 B=3 12 次のような △ABCの面積Sを求めよ。 (1) a=6,b=5,C=30° (2) b=2,c=3, A =120° A 120° 30 C C B B COS ∠FAM=エ K COS の値がわかれば、 角度もわかるよ! オ 45 ∠FAM= 花子: AFMの面積をSとすると 3. S= カ がわかった! が求められた! (1) 15 (2) 3√3 2 13 △ABCにおいて, a=3, b=6,c=7 のとき, 次のものを 求めよ。 (1) cos A の値 (2) sin A の値 (3) 面積S (1) 19 21 (3) 4√5 123 45

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English Senior High

(2)①studying (5)③regards (8)①came to realize (12)②to whom という答えになるのですが、どうしてそうなるか、なぜほかの回答がだめなのか解説お願いします!

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English Senior High

英検準一級の要約問題です。 添削していただけないでしょうか?🙇‍♀️

英検公式サンプル問題 ⚫ Instructions: Read the article below and summarize it in your own words as far as possible in English. ⚫ Suggested length: 60-70 words Write your summary in the space provided on your answer sheet. Any writing outside the space will not be graded. From the 1980s to the early 2000s, many national museums in Britain were charging their visitors entrance fees. The newly elected government, however, was supportive of the arts. It introduced a landmark policy to provide financial aid to museums so that they would drop their entrance fees. As a result, entrance to many national museums, including the Natural History Museum, became free of charge. Supporters of the policy said that as it would widen access to national museums, it would have significant benefits. People, regardless of their education or income, would have the opportunity to experience the large collections of artworks in museums and learn about the country's cultural history. Although surveys indicated that visitors to national museums that became free increased by an average of 70 percent after the policy's introduction, critics claimed the policy was not completely successful. This increase, they say, mostly consisted of the same people visiting museums many times. Additionally, some independent museums with entrance fees said the policy negatively affected them. Their visitor numbers decreased because people were visiting national museums to avoid paying fees, causing the independent museums to struggle financially.

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