化學問題，感謝。

100 dəsə bas,bosibindyd--q² 018 anogentia diod Cyclooctatetraene readily reacts with potassium metal to form the stable cyclooctatetraene dianion, CgHg²-. Why do you suppose this reaction occurs so easily? What geometry do you expect for the cyclooctatetraene dianion? ød an isqe ali toeleno o aejudium ludivinos andren has12- 72-idvd-Squ d-qe wol edt to low) odi 29fuis reportin besibirdyd al.e-anushistidan s asiq 2 K 2K+ golon

有沒有人有這個單元7、8、10的詳解 （翰將複習講義） 這個好模糊看不懂

10 翰將複習講義・數學A評量卷 【範助】單元 10 平面向量 第費部分:選擇題: 表示解析未定盤,詳細解析請見小老細解答: - M3A101 (W)1 坐標平面上有兩向量石~(-1,2),第一(4,2),FF99鄉 一個向量會平言,它的作 商品 22--2-411- B.(2.-8) W A (8.10) ( )2 設O為任意點,則下列哪個條件恆使P點在淋上? OP-04 OB 3 04-08+OP (30A-OB-40P-0 D 30P+04-208-0 BOA-OP-OB 3 a-ke b-kd 0000000 & 二、多選題(每題9分,一個選項得6分,贈兩個選項得3分,錯多於兩個選項或未作答者0分,共27日) *A21 下列選項哪些是正確的2 101 HET IN O 202101 1000 20031 C 101 202 202 101 303 404 404 303 1404 303 -303 -404 d-ke c C b-ka a ja+ke b+kd| \e+ka f+kb C b+hd | + e + ha stb|-| Ć b-Ad|-|d log, a log, a 2001 1999 2020 2022] 2001 2000</ 2011 2009 2010 2011 如若,均為正數,則 PEOP-î-po © XIV o O >0 a le-e d-fl -303-404 log b log b 0% *(-4) 片 5 001-07-2 bab b 10-1 (ND) & ARCP38-9-BC-10-C-11-FROPS? B WERSAARCHING-ABA-1 DELAGARCHINGAR A-45 DEOARC GRA0-81 EAD-AB+ AC · ½ ÁĎÁR NADEVIBARAN 15/2 IG AÐ BAČ PERRUFIDA 為18、數(x+y)-- 10/2 21|| RENCE An 40 AC - 10/2 4 DO ĐẶT HÀ (BC) 如右圖,請問下列哪些向量的終點會落在灰色區域內? OÀ+OF WA0A+ VED (C20A+OB-11-01- AC W X1-04+ OB S123 8324 1 4 13 25 10 00:2000-(-2) +2+-2531 N (x20 you Dx: 03-08-(-1.1) (-1)+1=<1-Fa 000(1) 2 ww 1 1

想請問紅色括弧那句的意思是什麼 以及第一題怎麼判別

A Unit 1 8 Environment The Melting Ice Caps The world's ice is melting, and it is happening at an alarming speed, rate, 3 Global warming has been increasing at a very unsustainable² and the polar ice caps have been vanishing³ before our eyes. In the 55 years between 1961 and 2016, the Earth's total ice loss amounted to an estimated nine trillion³ tons. The start of the 21st century bore witness to several profound decreases in terms of the area covered annually by Arctic ice. The year 2012 was the lowest on record, while 2007, 2016, and 2019 were tied for second-lowest. 10 As the ice melts, an excessive amount of melted water emerges from it. This large amount of melted water manifests itself as a rise in sea levels. (This rise leads to the increased erosion -or wearing away- of the coast. When combined with the higher frequency of ecological" disasters¹2, it results in a bigger storm surge¹3. Climate change threatens¹4 15 to forever change the way we live. We're all destined ¹5 to be affected by it. Ver all destined 閱讀理解,請在下列選項中,選出最適合的答案。 1 What does the word "erosion" refer to in the second paragraph? (A) The reason behind the frequent typhoons (B) The rapid increase in storm surges (e) The slow destruction of something 破壞 (D) The depressing future that we all face 2 Which of the charts below might indicate the situation described in the first paragraph? (A) (B) A (C) Arctic Ice Levels 1.||| 2007 2012 2016 2019 2020 Arctic Ice Levels 1₁ 1961 2007 2012 2016 2019 Arctic Ice Levels 1955 2006 2012 2016 2019 Arctic Ice Levels DWA dılı 2007 2012 2016 2019 2020

求解 最後一條節線要怎麼判斷要不要退化成射線

東亞與水資逢、慈實青衣外出菜 冰 3 兩個相距 10 m 喇叭 S、S,發出同相位且波長皆為4m的聲 波,若小明以如圖所示的橢圓軌跡繞此兩波源一圈,他將聽到 音量有大小起伏的變化,則小明繞完一圈後共可聽到 4 次 極弱的聲音及 X 次極強的聲音。 To 0<x<3 10 10 4 股0.入2入 概念 水波的繞射中 N=1 X=0 入-2 即工 13. 下列有關水波性質的敘述,何去確? AI =2.5 20 S₁ S₂

這兩天都解不出來😨求解

凶 3 綜合習題 單元1~4 Hope DE (A). sin 1 tro 、單選題(每題7分,共 14 分) )(1,已知扇形的圓心角為2強,且圓心角所對的弦長為2,則此扇形的面積為何? [搭配單元」 (E)tan1。 110 114 (B) sin 21 50 1 1-cos 2 114 2 sin toos 7=0 試問a、b、c的大小順序為何? 2 sin 2 (D) 45 A = My sin20 2. 已知<<二元,且設a=1-cos²0、b=- 1 4 18 10 cos 114 785 2 to 。 66 7-2、V、5、cos114 (公 ES 共)聚合園藝樂 100-+0.5 12 (51) CA (A)a<b<e (Ba<c<b (C)b<c<a (D)c<a<b (E)c<b<a。 $200++051 GS nieS (A) (a) -85200- 110570 cost cost my_tand -cosd、c= Saco 6c1-tan²0 〔搭配單元3]【109 指甲(修)】 1-C²50 cust 二、多 (tanzo. 85mes (9) ADD sin ²0 C330

請問2分之根號3sinx這個步驟是怎麼得來的？

7. 試將函數y=sin(x-g)+cosx表示成y=rcos(x-a),且0<a<2,則數對 201 08:500+ 8 (r,a)= (1,2) 0 T IT 解:y=sin(x-)+cosx=(sinxcos 6 6 cosxsin )+cos x = 15 S11:嘛,三 -Sinx+-COS X 6 NT 2 2 TU TU 20.5 3 =1(cosxcos +sinxsin )=1 cos(x一般)。按固定比例要出 3 8 18

求解

21.求 sin15° sin 5⁰ cos15° cos 5° || 【 】的值.

三角函數 39、40、41例題

39.設180°<f<270°,試化簡√sin²0+(1+sin⑥) = 【_1 1 (in ²10 +63²0) = 1 105²410-1-51²³0 7 40.設sin0+cosA= 且0為第四象限角,則 -- 13 (1) sin 0= [ - 005²0-1=-51²³000s off = Sihve 5 1 13 (Sing + cos19) == "169 = sin ²0 + cos²³0+ 2 sin-cos= 12. sin. cos= 41. sina+sin B = 1 cos a+cos3=0 (2) tan(180°+0) = { 1 cos= Esin 5 12. a tand=b atang-b 7 69 169 169 - 169 = Sin + √125in ² cos² a + cos² B = [ 3 1 2 19-21 sin 45

例題32的（2）跟33 三角函數求解🙏

Sin aso = sin(270° 410°) = 205 10° 32. 設 是第二象限角,且sin0+sin²0=1,則 −1+√√5 2 (1) sin 0 = (₁) } (2) cos² + cos¹ 0 = ( 1 ) 2 = sin otsino +30 - 1 √P=4-11-T 11514--1+√5 t vall 9-20 sin ² + cos² = | 1 205² == 1-sin ²³/0 1-Sin²0 H1-sin ¥33. 設sin²-3cos²d=2sin cose,且因為第二象限角,則tan0 = 【 1 】

想問此題該如何解🙇🏻‍♀️

學測 4568 全國模擬測驗試題彙編【數學】 高品全對率 11.07 中2月日 2 360112=30 7890 11. 如圖(2),為夜市中常見的射飛鏢遊戲,其中O為圓心 A,B,C,D 四個區域相對應的獎金金額分別為10,20,30,40元。遊戲規則 是每一回合玩家付給攤商k元可獲得三支飛鏢,莊家轉動圓形靶:Aria: 玩家射出飛鏢,射中哪一個區域即可獲得該區域的獎金。若阿南 是玩飛鏢的高手,支支可以射中靶面不含邊界的區域,命中該區 4 域機率與該區域所佔的面積成正比,試選出正確的選項。 S① 阿南命中 A,B,C,D四個區域的機率比為6:3:2:1 SALIN (2) 阿南射一支飛鏢可獲得獎金的期望值為 25 元(不考慮付給攤商的費用) (3) 阿南玩一回合可獲利的期望值為(55-k)元(包含付給攤商的費用) (4) 當 k=65 時,阿南連玩 10 回合,遊戲結束後阿南共賠了 100 元 (5) 若 k=90 時,阿南玩一回合,攤商賠錢的機率為 28 12³ D 30 C 160° Fres (S B (E) L 圖(2)