高校1年生の三角比の相互関係の問題です。 練習17の(1)と(2)の解き方はこれであっているでしょうか？ もし、写真のような円のかいてある図のようなものがあるのであれば教えてください。お願いします🙇‍♀️🙏

P X y A 1 O y 0 A x

1枚目縦になっていてすみません このような問題で、どのようにシータの角度を出すのかが分かりません 詳しい解説をよろしくお願いします🙇🏻

1 問14 0°≧0≦180°のとき, 次の等式を満たす0を求めよ。 1 (2) 2 sin0 = √3 √2 (1) sin = (3) cos=- (5) sin0=0 1 2 (4) 2 cos 0+√3=0 (6) cos=-1 Beoo FI

わからないのでどなたか教えてくださると助かります。

) of the two candidates could win in the electoral district. 2 Every 3 All (1) Some 4 Either

解説では場合分けをして計算していますが、２枚目の写真のように求めるのはいけないのですか？？

必解 81. <三角形が存在する条件〉 a>0とするとき, 3辺の長さが α, a', a となる三角形が存在するのは, □<a<□ のときである。 [13 名城大・薬〕

なぜ自分が書いたグラフのようなやり方ではダメなのですか？ 粗密の問題とかはAのところで矢印を書いて、正弦波のグラフをずらした時とかは、自分が書いたようにやるしかないと覚えるしかないのですか？ 本当にわからないです。お願いします

339. 縦波の表し方 図は,x軸の正の向きに進む縦波の変位を,横波のように表した ものである。 次の媒質の各点は, それぞれ図の0~Eのどれか。 (1) 最も密の部分 FIOMASSEY (2) 変位がx軸の正の向きに最大の部分 (3) 振動の速さが波の進行する向きに最大の部分 (4) 振動の速さが0の部分 例題45 OF SHO A fo 2 B C D E XC

こう求めたのですが、頂点がx＝aなだけであってグラフ全体がx＝aではないということになりますか？間違えていたら解説お願いします🥲

35 最 (1)y=-x²+2ax(0≦x≦2)の最大値を,次の3つの場合に分 けて求めよ。 11/2x (i)a<0 2<a (2) y=x²-4x(a≦x≦a+1) の最小値を,次の3つの場合に分 けて求めよ. (i) a <1 |精講 (1)は式に文字が含まれ, (2)は範囲に文字が含まれていますが,どち らの場合もグラフは固定し、範囲の方を動かして考えます.このと き,大切なことは場合分けの根拠で, 34 のポイントにあるように, 最大値、最小値の権利があるのは, (ii) 1≦a≦2 I. 範囲の左端 ⅡI. 範囲の右端 ⅢI. 頂点 の3か所です。(ただし, ⅢIはいつも範囲内にあるわけではない) このなかで,入れかわりが起こるときに場合を分ければよいのです. (たと えば,いままで左端で最大であったのに、次の瞬間には右端が最大になるとき) 0 解答 (1)_y=−x²+2ax=xmx ² + a² (i)a<0のとき x=al 4a-4 (iii) 2<a x=0x=2 上のグラフより 最大値 0(x=0) 参考 最小値は, (ii) 0≦a≦2のとき ( ) 2<α のとき x=a x=a 4a-4-- 40-4 a=27=²015. 4x2-4 x=0 x=2 上のグラフより 最大値 α² (x=α) 4a-4 (a <1のとき) OS (1≦a のとき) =4 x=0x=2 上のグラフより 最大値 4a-4 (x=2) となる.

教えてください！！

08 A: You'd better fasten your seat belt. This road is a bit rough. B: ( ) A: Please do what I say. It's for your own safety. What can I do? How should I drive? 09 A: I'm worried about the interview tomorrow. B: Don't worry too much. I'll keep my ( 2 legs fingers hands Shall I get out? Is it really necessary? 10 I know you're worried about asking her for a date, but just go ( ) it! for on away by 11 A: That was the best meal that I've had in a long time. B:( ) You can say that again. You can't ever say that. Would you like it? 3 How do you like your coffee? ) crossed and hope for the best. arms 12 A: Coffee in Japan is too strong for me. B: Why don't you add hot water or milk to make it weaker? A: Okay. ( ) B: Here you go. I never told you that. I can hear you once again. 13 A: May I be ()? I'll be back soon. B: Sure, Dexcusing 16 A Coffee, please. B: For here or (? to come to go Could you pass me the milk? Do you like your coffee weak? gone 14 A: I'm sorry, I have a previous appointment. B: Oh, what a ( X1 mess miracle done waste 15 A: What should I do about the mistake I've made? B: You can't do anything about it. It can't be ( avoiding depending helped to run ). excused pity waited to walk

教えてください！！

08 A: You'd better fasten your seat belt. This road is a bit rough. B: ( ) A: Please do what I say. It's for your own safety. What can I do? How should I drive? 09 A: I'm worried about the interview B: Don't worry too much. I'll keep my ( fingers lega You can say that again. You can't ever say that. 10 I know you're worried about asking her for a date, but just go ( for Don away by B: Here you go. Shall I get out? Is it really necessary? 11 A: That was the best meal that I've had in a long time. B:( Would you like it? How do you like your coffee? tomorrow. excusing 12 A: Coffee in Japan is too strong for me. B: Why don't you add hot water or milk to make it weaker? A: Okay. ( ) ) crossed and hope for the best. arms hands 16 A: Coffee, please. B: For here or ( to come 13 A: May I be ( )? I'll be back soon. B: Sure. )? to go I never told you that. I can hear you once again. Could you pass me the milk? Do you like your coffee weak? gone 14 A: I'm sorry, I have a previous appointment. B: Oh, what a ( ) mess miracle done 15 A: What should I do about the mistake I've made? B: You can't do anything about it. It can't be ( avoiding depending helped waste to run ). excused pity @waited to walk BRL)

教えてください！！

07 A: Could you type this document again? B. ( ) A: That will be fine as long as it is on my deak by five today. Of course. I'm almost ready to go. Sure, but can it wait until this afternoon? Yes, but could you tell me what's wrong with it? Definitely. That will be a good idea. 08 A: You'd better fasten your seat belt. This road is a bit rough. B: ( A: Please do what I say It's for your own safety. What can I do? How should I drive? 09 A: I'm worried about the interview tomorrow. B: Don't worry too much. I'll keep my ( fingers legs hands Shall I get out? Is it really necessary? 10 I know you're worried about asking her for a date, but just go ( for on away 2 by 011 A: That was the best meal that I've had in a long time. B: ( ) You can say that again. You can't ever say that. B: Here you go. ) crossed and hope for the best. arms Would you like it? How do you like your coffee? 12 A: Coffee in Japan is too strong for me. B: Why don't you add hot water or milk to make it weaker? A: Okay. ( ) 21 never told you that. I can hear you once again. (2003) Could you pass me the milk? Do you like your coffee weak? (286)

解き方が分かりません。教えてください

No. Date 3. 実数kを定数とする.xとyに関する連立方程式 2x+1 + 3y = 2 {1.² k.2x-3y = 3k-1 の解が存在するようなkの値の範囲は 38-2-2x+ 3= 2-2.2x =(1-2²) 2 k₁2²-2 (1-2²) = 3 k-1 k.2x+2.2%=3K+1 シス セ (2x-3)k=1-2.2² <k< ソ タ である.