一般解を表すときの2nπは何をあらわしていますか？ また、(3)でnπになるのは何故ですか？

232 基本の 例題 142 三角方程式の解法・・基本 002のとき、 次の方程式を解け。 また, その一般解を求めよ。 1 (1) sin0=- (2) cos 0= √3 2 (3) tan 0=-√3 p.231 基本事項 解答 三角方程式 sino=s, cos0=c, tan 0=t は, 単位円を利用して解く。 ① 6 を図示する。 次のような直線と単位円の図をかく。 sin0sなら, 直線 y=sと単位円の交点P Q COS 6=cなら、直線x=cと単位円の交点P,Q tumb-tなら、直線y=tと高線x=1の交点T (OT と単位円の交点がPON として, 点P, Q, Tの位置をつかむ。 ② ∠POx, QOx の大きさを求める。 なお, 一般解とは 0 の範囲に制限がないときの解で, 普通は整数nを用いて答える。 1 と単位円の交点をP,Q とすると,求める (1) 直線 y=- 2 0は,動径 OP, OQ の表す角である。 y 1 7 0≦0<2では 0=x, 117 =16 0 -1 1 P Q 7 11 11 一般解は 0= =1/2x+2nz, -π+2nπ n は整数) 6-1 1 6 2 √3 (2) 直線x= と単位円の交点をP, Q とすると, 求める 2 0径 OP, OQの表す角である。(*)0=±+2nπ YA 1 11 6 6 π 11 0≦0<2では 0= π 6 6 11 一般解は 0=+2nx, 6 +2n (*) ( n は整数) 6 と表してもよい。 P√√3 ✓ 2° O 11 Q (3)直線x=1上でy=-√3となる点をTとする。 直線 OT と単位円の交点を P, Q とすると, 求める0は, 動径 OP, OQ の表す角である。 y 2 3 2 5 O 1 X 0≦02では 0= πC 3 一般解は 0= + 3 02/22 (nは整数) 1/3も含まれる。 5 -1 Q -3 T(1,-√√3) 【参考】 (1) の一般解は0=π+2nπ, 7 π +2nz=- 6 6 -π+ (2n+1)であるから, 7 0=(-1)"-x+nπ(n は整数)と書くこともできる。 練習 0≦02 のとき,次の方程式を解け。 また, その一般解を求めよ。 ② 142 (1) sin=- √3 2 (2)√2cos0-10 (3)√3tan0-1 (4) sin0=-1 (5) cos0=0 (6) tan0=0 p.240 EX88

高校数学の問題です。 (3)の問題の正しい答えは1/6なのですが、どこが間違っているのか分かりません💦 教えてください🙏

練習54 空間の3点A(2, 0, 1), B(-1, 1, 0), (0, 1, -1) を通る平面をとし、 原点Oから平面に下ろした垂線の足をPとする。 (1) ベクトル OP の成分を求めよ。 (3) 四面体 OABCの体積を求めよ。 (2) ABCの面積を求めよ。 (2) x B 〈北海学園大〉 (1) OF AB=0 (-3,1,1) op AC = 0 07 (-2, 1, 0) = 0 A +1 OP σA + SAB + t Ac = (2,0,-1) + 5 (-3, 1, 1) + + (-2,1,0) = (2-35-2t, S +t, - 1 + s ) (2-35-2t, S + t, - 1 + s ) (-3, 1, 1) = 0 (2-35-2t, st t₁ =1+5) (-2,1,0)=0 -6 +95+ 6+++ + - 1+3)=0 -4 +6+4 t + t = = O (2-7 +7 -1+4) 2 12 (2-11, 1, 1) (1/1) 115+78=7 75 +5 t = 4 49 +5 = 24 5t. t- 555+35t=35 -)495 +35 t = 28 65=7 B A E √5 152 AB (-3.1,1), AC(-2,1,0), BC = (1,0,-1) = AB-AC6+1=7 cos 0: 7 「5 S.. 56 2/5 = 7 √55 (3) S= - 3 + LON 56 2 6 16 36

英語の共通テスト対策の問題です。 答えがあっているか、間違っていたら答えを教えてください🙇‍♀️

第2問対策 意見文の読み取り ③ No. Name Class Tomom 目標解答時間: 7分 共通テストドリル リーディング 改訂第5版 Your English teacher gave you an article to help you prepare for the debate in the next class. A part of this article with one of the comments is shown below. Net Shopping: Convenient but Addictive By Tony Sutton, Philadelphia 12 June 2019 9:20PM Internet shopping is very convenient. At night or when it is raining or snowing. 1.66 billion people (in the world) are estimated to have used the Internet for shopping in 2017.) In the same year, you can buy things comfortably from your room. total sales of online retail amounted to 2.3 trillion US dollars. It is predicted that the amount will reach 4.48 trillion US dollars(in 2021.) Some people object to this situation which could be described as a retail revolution. A male says, "I was one of those who became addicted to the convenience of online shopping and was purchasing almost everything online. But now, when I need something, I first think of going to a store to look for it." A female says, "The goods which are delivered are sometimes different from what I had in my mind. As it is troublesome to send them back, I end up using something that I do not really like. If I buy things at stores, such a situation does not happen so often. I will not buy unnecessary things, so I will not regret shopping. Therefore, recently I seldom shop online, and instead buy things at stores after seeing them directly." 9 Comments Newest Jennifer Frazer 20 June 2019 9:32AM /10 I also bought too many things online before, but now I have come to order only necessary things. The point is how to control yourself. As there are few shops in my neighborhood and there are plenty of goods on the Internet, I will continue to use the Internet for shopping. (★およそ280 words) 問1 According to the article, the total sales of online retail will 1 at 0 0 be four times as large as in 2017 ② be less than 1.66 billion US dollars decrease by about half in four years ④ increase to nearly twice as much in four years 問2 ①②③④ (2点) Your team will support the debate topic. "It is better to buy things at stores than to buy through the Internet. In the article, one opinion (not a fact) helpful for your team is that people 2 can buy only necessary things online 2 might be given a discount at a store 3 might buy unnecessary things at a store tend to buy unnecessary things when shopping online 1 2 3 4 (2点) esc 3 The other team will oppose the debate topic. In the article, one opinion (not a fact) helpful for that team is that 3 0 it is possible for you to shop comfortably online it takes some time for the goods ordered online to arrive 3 people can return the delivered goods if they do not like them people have to pay transportation fees to and from stores ① ② ③ ④ (2点) 7-2 © Z会 2025 [不許複製禁転載]

英語の質問です 答えは線で引いたところです 解説をして欲しいです

[11] 次の英文のae の英文の( )にはどの語が入りますか。もっとも適当なものを ①〜③の 中から1つずつ選びなさい。 a. Remember ( turned to turn turning) off your computer before leaving today. b. Haruki Murakami is a writer ( knew known knowing) all over the world. c. Let me introduce (① me mine myself). I'm Ken from Japan. least) expensive bicycle among d. Which is the ( little less these? e. Jack used to (① go gone 3 going) fishing when he was a child. 12 次の英文のaeの英文の意味が通るようにするには、( )の中の語句をどのように並べ たらよいですか。正しい順序のものを ①~④の中から1つずつ選びなさい。 a. His parents (1. always 2. read 3. him 4. make) good books. [ 1-2-4-3 21-4-3-2 2-4-3-1 ④3-2-4-1] b. It's important to study (1. not 2. languages 3. but 4. only) cultures. [ 1-2-3-4 ② 142.3 3 3-1-4-2 ④ 4-1-3-2] c. Let's keep (1. each 2. with 3. touch 4. in) other. ② 2-3-14 33-4-1-2 ④ 43-2-1] [ 2-1-4-3 d. Go to bed (1. as 2. to 3. so 4. early) stay healthy. [ 1-2-3-4 ② 23-4-1 ③ 3-14-2 4-3-1-2] e. All you (1. is 2. have to 3. do 4. study) if you want to pass the next exam. [O 2-3-1-4 ② 2-4-1-3 ③ 3-1-2-4 @ 4-1-2-3] <-14-> [和6年度 第73回2級]

この問題で、95の（4）、（5）ではCを使って解いてるのに演習95の（3）、ではPで（4）ではPを使うのはなんでなのか教えて欲しいです！！ それと、CとPの使い方の違いも教えて欲しいですおねがいします！！！

156 朱 95 順列 (I) (場所指定) equation のすべての文字を用いて, 順列をつくる.このとき、 次のようなものは何通りあるか. (1)e,n が両端にあるもの ○ (2) q, u, a がとなりあっているもの.◯ (3) q, uがとなりあっていないもの) (4)t, i, o, n の順がこのままのもの。XT (5)q がaより左にあり, tがaより右にあるもの XT 問

英語の共通テスト対策の問題です。 答えがあっているか、間違っていたら答えを教えてください🙇‍♀️

tood wonal algo al dal 目標解答時間: 7分 問1 You are an editor at a school English blog. Andrea, an exchange student from the US, has written an article for the blog. Studies show that children's physical and mental health, as well as their academic performance, improves through healthy school lunches. Experts say that school to learn lunches are a chance for children to enjoy a wide variety of dishes, and about the food history and culture of their nation and the world. In that sense, the lunchroom is also a classroom. Yet, both American and Chinese students waste large amounts of lunch food. Why is that? The following survey results may hint at one possible answer. estra ▸▸Less than half of American schoolchildren rate their meals as tasty enough to eat. This is higher than in Beijing in China, where children are less satisfied with their meals. ▸▸A large majority of schoolchildren in France, followed very closely by South Korea say they are satisfied with their school lunch, and lunch waste in both these countries is not much. Students in both countries look forward to their school meals. The United States Department of Agriculture (USDA) manages public school lunches (in America. The USDA requires school lunches to include plenty of vegetables and fruits, whole grains, milk and at least one meat item or another food item as nutritious as meat. The USDA lunch program in 2020 cost about US$10 billion. provided Despite USDA's efforts, it seems American children are not happy with the school meals they get since the lunch waste level is so high. However, we shouldn't waste food. On the other hand, since coming to Japan, I've learned Japanese students try not to waste food because they have been taught its value. The lunchroom works well as a classroom. 共通テストトリル /10 リーディング 改訂第5版 In terms of lunch satisfaction, which shows the countries' ranking from highest to lowest? China-France-the US - South Korea China the US-France - South Korea South Korea - the US-China the US-China - South Korea (2) ③ France ④ France 6 South Korea - France - China - the US 6 South Korea - France - the US-China ① ①②③④⑤⑥ (2点) 2 According to Andrea's blog post, one advantage of a healthy school lunch is that 2 children will learn to cook meals 2 food preparation costs will decrease learning history will become easier ④overall student academic scores may rise ① ② ③ ④ (2点) 3 The statement that best reflects one finding from the surveys is 3 問4 ① 'Children enjoy school lunches if they taste good.' ② 'Countries with big budgets can provide truly good meals." ③ 'Schools should focus on nutrition to avoid food being thrown out." 'Teachers must punish children who do not eat their school meals." 1 2 3 4 (2) Which best summarizes Andrea's opinions about Japanese schools? They explain importance of not wasting food, which works well. 2 They have enough time to enjoy school lunch. They have wonderful lunchrooms. They show students how to cook national dishes. 4 ① ② ③ ④ (★およそ290 words)

２番はa2kが整数でなければならない、だから5の2k乗がさんで割ることができるように変形するため３を法としてmodを利用したということであってますか？

練習 2.3 数列{an} を (株)合器 11 a1 = 3 an+1=5an-4n-3 (n=1,2, 3, ...) により定める. (1) 一般項 α を求めよ. n (2)正の整数nに対して, [ak] をnを用いて表せ。ただし, 実数x に対して, [x] k=1 はxを超えない最大の整数を表すものとする。

解説お願いします🙏🏻1枚目はingと過去分詞で迷ってしまいました🌀2枚目は〜な時という表現で形容詞+ingのときと形容詞+toになる時の違いが分かりません。教えてください

(41) 132 ) from the airplane, the lake looks like a huge doughnut. Seeing See ③Having seen ④Seen mist to tuo nocantiv solam a

この大問を教えて欲しいです。

こと。 hat 1 次の英文には誤りや不適切なところがある。 該当箇所に下線を引いて訂 正しなさい。 (1) この世のもめ事の大半は感情的になりすぎて起きるものだ。 Most problems in this world arise when I am too emotional. (2) だれもが自分の夢を持っている。 Anyone has their own dream. (3) すべての人が自分の将来について心配しているわけではない。 Everyone are not worried about their future. (4)その奨学金に応募したい人は、この申込用紙に記入しなければいけない。 Anyone who want to apply for the scholarship have to fill out this form. 5) 辛い食べ物を好きな人もいれば, 嫌いな人もいる。 Some of people are fond of spicy food, while others hate it. 大 m ( a

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a-b 3(a+b)(a-b)+6a- (+362+6+3) a-b 分子は α-63+3(a²-b2)+(a-b) a-b =α+ab+b2+3(a+b)+1 =(a+b)2-ab+ 3 (a+b) +1 =(-2)2-a(-a-2)+3・(-2)+1 =α2+2a-1 よって, l3 の方程式は y-(a+3a2+a+3)=(a2+2a-1)(x-a) すなわち y=(a²+72a-’1)x+α²+2a + "3 α について整理すると (x+1)a²+2(x+1)a-x-y+3=0 (a-b)(a²+ab+b²) +3(a-b)(a+b)+(4-6) a+b=-2を使える形に 変形。 よって a 2点(α, f (a)), f(a)+ (a+B 2 α, βは2次方 数の関係によ したがって また,f(x) この式をαについての恒等式とみると x+1=0, -x-y+3=0 よって x=-1,y=4 αの値に関係なく通る点 ゆえに, l3 は定点 (-1, ^4) を通る。 l と l が直交するとき →直線の方程式を4につい ての恒等式とみる (3a2+6a+1)(a²+2a-1)=1 変形して 3(a2+2a)2-2(a2+2a) = 0 -)(0) 2直線が直交 →傾きの積が1 (a2+2a)(3a²+6α-2)=0 -3±√15 これを解くと a=0,-2, 3 a < b より a<-α-2 であるから a<-1 したがって α=-2 または α = 3-√15 3 (*-3-15-2でもよい) すると、 142 <3次曲線の対称性〉 (1) 中点Pの座標は a+B f(a)+f(B)\ ゆえに よって 曲線 (2) 求 よっ した (3) ( (x に