なぜπ/６が√3/3になるのかが分かりません 赤で囲った部分のことです

D M ★★☆☆ 例題 153 2直線のなす角 2直線 3xy0 ... ① 2x+y-4=0 ② について (1) 2直線のなす角0 (0≧≦o)を求めよ。 (2) 直線 ①との角をなし、原点を通る直線の方程式を求めよ。 ReAction 2直線のなす角は, tan0 = (傾き) を利用せよ IA 例題132 思考プロセス (1) 直線 ①とx軸の正の向きのなす角を 0, 直線②とx軸の正の向きのなす角を02 001, 02 の関係は 0 tand, tan02 (2) 図をかく 条件 を満たす直線は, 右の図のように2本ある。 Action» 2直線のなす角0は, tan の加法定理を利用せよ 解 (1) ① ② がx軸の正の向きとなす角をそれぞれ 01, 02 と tanQ=3, tand2=2 すると 002-01 であるから tane = tan(02-01) tang – tan. 1+tan O2tan01 -2-3 = 1 1+(-2)・3 直線 y=mx+kがx軸 の正の向きとなす角を 0(0≦0π)とすると m=tan0 y=mx+k 2 yea 4001200 102 01 ( 01 _02 交点を通るx軸に平行な 直線を引き, 同位角を考 0 2x える。 30 π より 0 = π 4 (2) 求める直線がx軸の正の向きと y π なす角は 01 土 である。 6 6+5√3 tan (+) 3 tan (6-6)=-6+5√3 3 よって、 求める直線は,原点を通るから tan(+)- 3- tan(0,-)- 6+5√3 y = -6+5√3 3+ 3 = 1-3. www/www/www/w 3 √3 3 3 1+3・ 3 3 -x, y= X 3 原点を通るから、切片 は0である。 123 (1) 練習 1532 直線 x-2y=0 ... ①, x+3y-6=0 ② について ... (1) 2直線のなす角00≧6 0≧≦1) を求めよ。と π 2 (2)直線 ①との角をなし,原点を通る直線の方程式を求めよ。 p.310 問題

英語の和訳です what we think is a lack がなぜ「時間が足らないと思っていること｣になるのですか？ 「私たちが思うことは時間の不足｣にならないのはなぜですか？

16 surveyed のように,名詞の後ろに置く場合もあります。 2by は 「差」を衣 キログラム分減ったという意味です。 360万キログラムにまで減った」を表すなら 10 が使 われます。f smilarl 7' A lack of time - or what we think is a lack is one of the main reasons 不定詞の意味上のS] lacking in time), he or she will S [why modern food habits differ (from those of previous generations)] 21 makes it impossible for us to pursue our desires and forces us (inte 仮o-c 真o compromises [we never quite intended ]). There is evidence someone (s)- (^) feels (c) meals (less) and (yet) end up eating more food). 0 v2 同格の that that (wher cook (less), enjoy v'1 v2 v3- 訳 時間がないことあるいは、時間がないと思っていることは、現代の食習 慣が前の世代の食習慣と異なる主な理由の1つである。 そのせいで私たちは、自分の希 2

下線部クの次のaccess〜の部分の訳で澄み切った空がなかなかない、という訳はどこからきているのか教えてください

thousand stars (カ) Milky Way galaxy, and the planets slowly making Today we live largely cut off from this spectacle, with smog and light pollution *obscuring our view of this *perpetual cosmic drama, the unfolding of which once seemed intimately connected to questions of both natural and social order. But if we want to see Mars as it appeared ancient humans, access to a clear night (ク) (キャ sky is only half of our problem. We also have to put ourselves in their minds. [ 1 ] We have seen the surface of the Sun, the landscapes of Mars, the atmospheres of Venus and even Jupiter. We've discovered moons around other planets, and have found icy ocean worlds among them. We've used modern physics (to *infer the existence of black holes, and have now even "seen" them (with powerful radio telescopes.) We know that stars are bright orbs powered by *thermonuclear fusion. We know that within the observable universe, many billions of them (a septillion, in fact, with twenty-four zeros) are packed into 170

カッコで囲んだとこの英文の1つ目のandからの訳がどうして2枚目のようになるのか教えてください。 2枚目のどんな疑問が重要か〜の次のとこからです

ample practices varied across time and place. The truth is that we about what preliterate societies knew or believed. But they left behind *. evidence of their attention to the movements of the Sun and the phases of the Moon. And we can be sure that whatever questions they asked of the heavens were very different from those that motivate space exploration today. (A) rotic othe In reality, the difference between ancient and modern knowledge systems is more qualitative than quantitative; it is not about how much is known, but about what questions are important and about the acceptable ways of asking and answering those questions. And while we may not easily be able to slip between our modern worldview and those of others, we can nonetheless attempt to do so by asking not what ancient people knew about the world, but what their questions were when they looked at it. If we do this in the case of Mars, examining a few of the earliest known examples from around the world, we can see how sky knowledge was considered important to the functioning of the state whether it was *astrological knowledge in the service of good governance, or knowledge of bloodlines and relationships with the gods and other sky entities, which was used (B) - verdd

横向きでごめんなさい！過去完了の文章でサムの部屋はとても散らかっていた。彼は1ヶ月以上部屋を掃除していなかったのだ。を英語にする問題です。 私は動作の継続かなと思ってhad not been cleaningにしたのですが答えはhad not cleaned his roo... 続きを読む

recognized him right away.) mlover a month]. revure [Takuya's photo / a photo of Takuyal (before)(, so I 3) When I got [came] home last night, everybody had (already) gone to bed. 4) I had never eaten [had] such a big hamburger before I went to[visited] the US the States/ America]. 5) We had been playing baseball (for) about an hour when it started[began raining [started / began to rain]. 解説 1)過去のある時点までの継続。 clean は動作動詞だが、否定文では状態の継続の意味で使える。 2-3 2) 過去のある時点までの経験。 →2-23) 過去のある時点までの完了・結果。2-1 4) 過去のある時点までの経験。 「アメリカ」は正式名称が the United States of America だが, the US と言うことが多い。 →225) 過去のある時点までの動作の継続。過去完了進行形を使 う。→2-3 [Give It a Try!] 1) (I) had never met[seen] her before. 2) (I) had never ridden a horse before. 例) その情報は私にとって新しいものだった。 それまで聞いたことがなか 1 女性が乱

横向きでごめんなさい！この文の4)なのですが、beforeはuntilにしてもいいのでしょうか？使っている問題集に同じような文なのにbeforeとuntilが使われているものどっちもあって混乱しています。調べたらuntilにはsvがついてbeforeには名詞が続くとあったの... 続きを読む

結果 > ったか、バスはもう出てしまっていた。 〈過去のある時点までの完了・ [英作] 1) (He) had not [hadn't cleaned his room (for) more than a month[over a month] 2) (I) had seen Takuya in a photo[picture] [Takuya's photo / a photo of Takuya] (before)(, so I recognized him right away.) 3) When I got [camel home last night, everybody had (already) gone to bed. 4) I had never eaten [had such a big hamburger before I went to visited] the US[the States/ America]. 5) We had been playing baseball (for) about an hour when it started began] raining[started/ began to rain]. 解説 1) 過去のある時点までの継続。 clean は動作動詞だが,否定文では状態の継続の意味で使える。 2-3 2) 過去のある時点までの経験。→2-23) 過去のある時点までの完了・結果。 2-1 4)過去のある時点までの経験。 「アメリカ」は正式名称が the United States of America だが 2-25) 過去のある時点までの動作 the US と言うことが多い。

何をどうしていいか分かりません。 解答お願いいたします。 もしよろしければ解説の方も聞きたいです👂

7 それぞれの疑問文を下の英文に続け、文を完成させなさい。 (6) を必ず入れること。そして、使った 0910 1. When is John going to leave Japan? I want to know andの使い方」 2. Why didn't you come to the party? Please tell me 3. Which team won the baseball tournament last year? があった場合、てなく文とか は不可。 し直すので注意。 I don't remember なんとできていないレポートは、提出を取り消し返却する。

17行目のin their hanasのtheirは何を指しているのですか？教えて頂きたいです。よろしくお願いいたします。

10 The energies of conquest were not merely more efficient technologies. The European settlers used technological advantages for personal benefit. They viewed the land as a source of commodities as raw material waiting for transformation. 心理学 Although the psychology of the settlers varied considerably, according to class, religion, and nation of origin, most of them shared a set of beliefs that led to APP まめよ植えよ 15 expansionism. They believed in the Biblical *injunction to be fruitful and multiply, fruit GOLF and they believed that they were to use their talents to the maximum to develop the land, which divine providence had placed in their hands. They saw the Native *REV Americans as *heathens who had failed to utilize the New World, which to Europeans seemed a wilderness. The technological differences between Native and European 20 cultures appeared to demonstrate the superiority of the newcomers. Machines 新しくもののが優れていること xoa increasingly would become the measure of man, and the very energies of conquest seemed to justify the victory. RS (3) 1月 farmers

英検準2級です。 関係代名詞で、whatとthatの違いがわかりません。 調べると先行詞が要るかどうか、みたいに書いてるんですけど先行詞もよくわからなくて... 使い分け方と、例文などを教えて欲しいです！

marry の形がわかりません

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