三角比です このように、角度の範囲が0から180のとき、答えは2通り必ず書かなければならないのですか？

244 (1) sin 0 から、 0°<0<90° または 5 90° < 0 <180° である。 cos²0 =1-sin2²0 = 1- - cose: 212 21 5 0°<0<90°のとき, cos0>0であるから 25 -√√2/11 √21 25 5 = = tan 0 = tan 0 = したがって 2 √21 5 2 √21st 5 90° 0 <180°のとき, cose<0であるから 2 sin 0 COS 0 cose = -√√²/2 21 25 sin 0 cos cos 0 = = = または cosa: = = 2010-0203 √21 5 答編 ÷ 21 5 Der2 - ²/² + (-√ ² 1) = -√2/201 5 5 √21,0 5 tan 0 = 9 tan 0 2 √√21 = -63 2 BAS

答え教えてください🙏

Exercise 2 次の語(句) を、 和文の意味になるように並べ替えて英文を完成させなさい。 1. 最終候補者が2人いて、2人とも素晴らしいコミュニケーションスキルを持っています。 [ there are / and/ have/ both / good communication skills/ two final candidates ]. 2. 富裕層の生活と貧困層の生活の間に著しい差があります。 [ a sharp contrast / those of the poor / between / the lives of the rich / there is / and ]. 3. アメリカ人は個人主義を重視しますが､ 一方日本人は集団志向的です。 [, while / Americans/ Japanese/stress individualism/group-oriented / are ]. 4. 私は見た目は母親に似ていますが､ 性格は彼女とは全く違います。 [am totally different/1/but/from her / in appearance / in character/my mother/ resemble ].

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in Japa originated 次の語(句) を、 和文の意味になるように並べ替えて英文を完成させなさい。 Exercise2 1.最終候補者が2人いて、2人とも素晴らしいコミュニケーションスキルを持っています。 [ there are / and / have / both/good communication skills / two final candidates J. 2. 富裕層の生活と貧困層の生活の間に著しい差があります。 [a sharp contrast / those of the poor/between / the lives of the rich / there is / and ]. 3. アメリカ人は個人主義を重視しますが､ 一方日本人は集団志向的です。 [, while / Americans / Japanese / stress individualism/group-oriented / are ]. 4. 私は見た目は母親に似ていますが､ 性格は彼女とは全く違います。 am totally different/1/, but/from her / in appearance / in character / my mother/resemble ].

答えはBです。 後者ははアメリカ英語を学習した人にとってはなじみがある。 従って/言い換えると、両方とも正しい英語である。 変ですか？ CとDがおかしい理由教えてください。

The latter may be more familiar to those The former is common in who have learned American English. Why did this happen? Noah Webster, a textbook author and Great Britain, Canada and Australia. lexicographer, wanted "Americanized" spelling and pronunciation of words, different from those in Great In 1828, he published a two-volume dictionary which greatly helped to make the Americanized Britain. spelling common. The fact of the matter was it was part of American nationalism. After winning political from Great Britain in 1776, Americans became more conscious of developing their own identity as a new In literature, Americans rejected such European criticism nation. Nationalism rose in various fields. The northeastern region produced world-famous American as "Americans have no national literature." Which is more familiar to you, "centre" or "center"? writers I Edgar Allan Poe, a detective story writer and Ralph Waldo Emerson. In addition to these writers, there were also inventors who greatly helped in advancing American industry. Cyrus Hall McCormick, the inventor of the reaper, and Samuel F. S. Morse, the developer of the telegram code, are two such inventors. 間 1 In diplomacy, President James Monroe issued in 1823 the so-called "Monroe Doctrine," a warning to European nations not to interfere with America and the Western Hemisphere. It was the American This policy of isolationism embraced in the doctrine continued as the U.S. intention to be オ diplomatic policy until the end of the century. While challenging European criticism and power, young America tried to be more independent of Europe, not only politically, but economically, culturally and diplomatically. (2) lexicographer: ##*** isolationism: ŽÈ* ア both are correct English. 33 空所 A In addition reaper: 刈り取り機 interfere 干渉する Brajcich and Tanioka (2010) Eye on American Culture (**) ***** ア を満たすのに最も適切なものを、A~Dのうちから1つ選べ。 B However C Therefore D In other words

この問題の解き方を教えて欲しいです🙇‍♀️

Ⅰ 次の英文を完成させるために,空所に入る最も適切な文を(A)~(D) より選び、その記号をマー クせよ。 ( ) He describes it is a state of ideal experience that can be brought about by tasks that have clear goals and provide immediate feedback. ack() Chess and basketball players, dancers, climbers, and assembly line workers can all experience flow while deeply engaged in their activities. Flow happens at a point of balance between boredom and frustration. (3) On the other hand, if the challenge is too high relative to the individual's skill level, frustration becomes likely. The flow state sets in when the challenge level of the activity meets the skill level of the person. In this sense, flow is related to what we call "fun." () For example, climbers will move on to ascend more demanding rock formations, and chess players will seek to play against more skillful opponents. ✓ (A) One of its defining characteristics is the loss of the sense of self and time because absorption in the task at hand is so complete. (B) Flow, as famously investigated by Mihaly Csikszentmihalyi, is a mental state characterized by deep absorption during challenging activities. (C) Moreover, as our skills improve in the activity, we seek to increase the challenge in order to keep experiencing flow. (D) If an activity provides a level of challenge that is too low relative to the skill level of the person, it becomes boring,

46. x^2-mx+p=0の式にx=γを代入していいんですか？ x^2-mx+p=0に代入できるのはαとβだけではないのですか？

78 重要 例題 46 2次方程式の解と係数の関係と式の値 00000 2次方程式x2-mx+p=0の2つの解をα, βとし, 2次方程式x-mx+q=00 2つの解を y, 8 (デルタと読む)とする。 (1) (y-a)(y-β) を p, g を用いて表せ。 1.7235 (2)か,gがxの2次方程式x²(2n+1)x+n²+n-1=0の解であるとき, (r-a)(y-B)(8-α) ( 8-β) の値を求めよ。 おまいられ」とい 基本41,44) INTLU 指針解と係数に関係した問題では,次の3つ (互いに同値) を使い分けることが重要。 ① 2次方程式 ax2+bx+c=0の2つの解がα, B 32SUUS [2]_a+B==b, aß= [3] ax²+bx+c=a(x-a)(x-B) (1) (y-a)(y-B) の式を導きたいから,x-mx+p=(x-a)(x-β)であることを利用し て考える。 (2)(1) と同様に,(ô-α) (8-B) をp, gで表し,解と係数の関係を利用。 解答 (1) α,β は x-mx+p=0の2つの解であるから この等式の両辺にx=y を代入して -(1-we) x2-mx+p=(x-a)(x-β) Most cesty また, yはx-mx+g=0の解であるから r²-my+q=0 ゆえに stuc-vs+x(1-4)²+x=9 e-my+b=(y-a)(y-B).... ①ヶ靴代媛因覧でただ1 p+g=2n+1, pg=n²+n-1 (p−q)²=(p+q)²− 4pq 指針の3 を利用。 よって e-my-my を消去。 ① に代入して (r-a)(r-B)=p-q (2)もx-mx+g=0の解であるから, (1) と同様にしてーーーー (8-α)(8-B)=p-q 21st (1 よって (r−a)(r—B)(8—a)(8−ß)=(p−q)² ここで, b, g は x2 - (2n+1)x+n²+n-1=0の解であるか ら, 解と係数の関係により =(2n+1)²−4(n²+n−1)=5 よって (y-a)(y-B) (8-α) (8-B)=5 #(1=Y)&- etviv (1) のyを8におき換える だけで、まったく同じこと がいえる。 (パーズ指針の ② を利用。 ◄(p−q)²=p²-2pq+q² FU=(p²+2pq+q²)-4pq =(p+q)²—4pq

⑵でどうして４なのか教えて欲しいです。あと他の選択肢がダメな理由も教えてください🙏

nd OR) [A] Sports have been around for a long time. For example, an ancient wall painting shows that people enjoyed wrestling in ancient Egypt. In addition, the Olympics began in the 8th century B.C.E. in ancient Greece and many people still enjoy them today. ( A ) people have enjoyed sports for a very long time, professional sports are relatively new. This means that sports are still evolving and will continue to excite people, (B) produce many superstars. V₁ 0 V+ X Choose the appropriate word for (A) and write 1-4 on your answer sheet. 1. Since 2. Although 3. Once 4. Unless 2) Choose the appropriate words for ( B ) and write 1-4 on your answer sheet. 1. as good as 2. as long as 3. as soon as (4. as well as SENS rinolohi mela bri 3) Which of the following statements is true of the paragraph? TUI 1. Old paintings show that people enjoyed sports in ancient times. 2. The first Olympic Games were held in Italy in the 8th century B.C.E. imm 3. Professional sports have been around since the beginning of sports. ebbe liars sidi DES

tの範囲がなぜ②のようになるのかわかりません。

5 第1節 | 一般角の三角関数 応用 例題 5 0≦0<2πのとき, 方程式 sin0- 解 考え方 12/2=t とおく。 ただし,t の値の範囲に注意する。 3 0- - 2 x = t とおくと, 0≦0<2πであるから 12/21st</12/20 -π≤t< 3 ② の範囲で①を満たすtの値は, JERO t: したがって, 2 0-²3/7 n= π よって, T 5 4'4 -T π 5 4'4 5 0= π, 12 in(0-²/3-T) = 2 πC 23 12 sint=- π √2 2 √2 2 t=- 32 5 2 3 を解け。 YA RO || 4 ① (2) /1 √√2 2 127

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ⅡI. 次の 17 17 18 19 20 21 22 23 から一つずつ選びなさい。 Her ( 23 の各英文の空欄に入る最も適切なものを,それぞれの中 today presentation 3 presentation today The new ATM is easier for ( ) left nothing to be desired. visual impairing 3 visually impairing killing 3 for which dies ones Food contamination is a serious problem in the U.S., ( year. given The 21st century has ( The results of the experiment were greatly different from ( expected. + because 3 is that ) people to use. 2 that presentation's today today of presentation making to oblige 3 obliged to make visual impaired visually impaired 2 seen 2 with killing 4 the death of 3 which One of the main causes of the declining birthrate in Japan ( chosen to remain unmarried. ) about 5,000 people every 3 resulted ) the rise of various new business models. ) the researchers had 2 is the reason 4 so that 4 what Some workers just seem to follow orders and become confused when ( decisions. 4 appeared ) more people have making obliged to obliging to make ) their own

解答してくださると助かります！

ⅡIⅠ. 次の 17 17 18 19 20 21 22 23 から一つずつ選びなさい。 Her ( 23 の各英文の空欄に入る最も適切なものを、 それぞれ~ の中 today presentation presentation today The new ATM is easier for ( visual impairing visually impairing ) left nothing to be desired. killing 3 for which dies ones + given Food contamination is a serious problem in the U.S., ( year. The 21st century has ( 3D is that The results of the experiment were greatly different from ( expected. because 2 that 2 presentation's today 4 today of presentation ) people to use. 2 2 seen making to oblige 3 obliged to make visual impaired visually impaired with killing 4 the death of which One of the main causes of the declining birthrate in Japan ( chosen to remain unmarried. ) about 5,000 people every 3 resulted ) the rise of various new business models. ) the researchers had 2 is the reason so that 4 what Some workers just seem to follow orders and become confused when ( decisions. 4 appeared ) more people have making obliged to obliging to make ) their own