求講解為什麼選D

serious damage. (A) and (B) that (C) which (D), which

想請教數學大神們！！！🥹🥹😭😭 想問一下為什麼題目寫sin45是根號2分之1 但sin45不應該是2分之根號2嗎？😭😭

△ABC中,已知∠A=75°、∠B=60°、AB=6, 則邊長AC 為 、外接圓半徑R為 A 解 ∠C=180°-750-60°=45° 7509 6 利用正弦定理: 60° 450 B C b C AC 6 =2R,即一 == 2R sin B sin C sin 60° 6 6 √√√3 AC = ×sin60°= sin 450 2 sin 45° = √3 = 3√6 2 √√2 S

非常非常非常急需數學大大們的救援拜託😭😭 想請問為什麼這題解答寫的sin30是2分之1 但sin30不是2分之根號1嗎？？？？

1 老師講解 求三角形面積(已 配合課: △ABC中,AB=4,BC=52,∠B=30°, 試求△ABC的面積。

想請問一下這一題 （紅色Q的部分）

(A)what 6. Bill didn't know (A)how 7. ( B Exercise good mood. (A)gives the origins of m (B)which (C)that (D)when he should do after his house was destroyed by the flood, (B)which (C)what Dthat 为什么不能翻他應該做什么事 us a lot of good. It can not only strengthen our body but also helps us stay (B)does (C)causes (D)makes

求解第16題 如果可以用圖表示會更好ヽ⁠(⁠(⁠◎⁠д⁠◎⁠)⁠)⁠ゝ

15. 設 co -2/2 cos 0= 3 且90°<<180°,試求co 1720 cos(0-4500)=3。 (IV) Sin O 5/11 16 若直線L:4x+7y=-5的斜角為0,則直線La:x+v3y=1和直線L:7x-4y=9所夾的銳角 。(以0表示) M₁₂ = 1 為 M₁ = - m₁ = -35 【北一女中】

第24題 要怎麼分出來啊 謝謝

貝 (A)大拇指 (B)中指 24. 下列方程式何者最可能畫出圖二之方程式圖形? ♡()==1 16 25 (B) 2 =1 25 16 (C)無名指 (C)号 16 25 25. 圖三為 y = f(x)之部分圖形,試問下列何者最有可能為f(x) ? ·=1 云中指 (D)小指 (1)=1 (D)只 16 25 (A)f(x)=sinx+1 b (B)f(x)=2sin x 10→ 12 8 →→白 【圖一】 -5 0 【圖二】 (C)f(x)=2sin2x 第2頁,共4頁 0 (D)f(x) = sin2x+1 【圖三】

類題1.1的E選項，想請問在容器內形成氣態溶液，兩種氣體的體積是會重疊嗎？答案寫氫氣和氧氣體積都是2L

氣糖粒于間的距離很天 ② 當容器的體積固定時 0 氣體的體積就是容器的體 故可以再充入其他氣血 ):與氣體的英耳數無關 2L。 電站 2氣體壓力計 THE 2 (AW(C)(E) 152 atm = 0.2 atm W Pan +600=P大氣,Pat +600=752(mmHg) Pt=152 mmHg W(C) 氫氣的壓力變大 760 不同無 a N 故O2、H的體積均為 Ms 焦點 道耳頓分壓定律 4 190 左端水銀面下降,右端水銀面 26 H.的莫耳數一 (A)Xn. (D) 高山的大氣壓力變小,故右端水銀會上升 上升,故水銀兩端的高度差會小於60cm。 端的水銀會下降 , 而氮氣 =15.2 cmHg,故氮氣端水銀面會 > Pm=152 mmHg = 低於真空端水銀面 15.2cm。 顆2.1 78 76 (1)1040 atm = 78 76 (2)2 -×1013 hPa=1040 hPa → 大氣 + 74 (cmHg) 2 2cmHg 理想氣體 (2)-73 152 76 492 1000 =78+74(cmHg) atm=2 atm =n×0.082x (27+273) 氣體 不同的 (B) Pite 46 40×32 , H、He的w,均相同,故兩者的 2 + 12 ( ätw) (C) M-M₁, x> (D) 密度d= 密度相同。 2 27 (E)P = P× Xin, = t 經典題5.1 ●(C) (A) 分子數: 文:氫氣 2+(1+3)=2(atm) ( 12 莫耳) >甲烷 ( 16莫耳) > 二氧化硫( 64莫耳) no 所以 二氧化硫 £80.0 1.0 (B)由PV=nRT,在同一容器內,V、T相同,故Px ,大者,分壓大⇨分壓:氫氣>甲烷> 。 率:氫氣>甲烷>二氧化硫。 (C)莫耳分率Xxn。所以,大者,X大⇨ 莫耳分 3 (2) PVRT 養 (D)由PV=nRT,當P、T相同時,Van。所以,n大 者,V大⇨體積:氫氣>甲烷>二氧化硫 共通的物性分子間引力很 不停運動 (1)可以無限可 (2) 氣體分子碰撞物體因而一 補充教材 各種氣體的化性:同溫壓下mol数相同體積相同 反應 比一劍耳數 4+1 108 0.8-24 依題意 6.故可以分壓代替 P=(0.8-2x)+(04-x)+2x=1 ⇨x=0.2 2x 所以,一氧化氮分壓為0.8-2x=0.8-2×02 =0.4 (atm) 經典題7.1 ● (A) nRT 混合前,NH3的壓力 P 6.80 17 ×0.082×( 2.00 =4.92(atm) C) 0 .5 (40-) 氣體 性質 氣體 性質 氫氣 H2 氯氣 Cl2 可燃,密度最小的氣體 黃綠色,漂白水味道 有毒性 氦氣 He 沸點最低,最難液化的氣體 , 臭氧 O3 mo 00 強烈臭味,有毒性,具漂白 力 氨NH, 刺激性臭味,有毒性 二氧化氮NO 紅棕色,有毒性 會面水壓限 範例1 氣體的性質 下列有關氣體性質的敘述,哪些正確? (A)在體積固定的6L容器內含有4g氧氣,若抽出2g氧氣後,則剩餘氧氣的體積為3L (B)氣體均沒有顏色 (C)氣體可高度壓縮 (D)氣體的密度並不固定,會隨容器的大小、氣體 的質量多寡而改變 (E)氮氣與氦氣可以任意比例均勻混合於同一容器內,形成溶液 N2 He不反應 CDE 計 解 'g' 類題 1.1 下列有關氣體一般性質的敘述,哪些正確? (A)氣體粒子間的平均距離較液體大 (B)氣體分子本身的體積遠小於其活動的空間 (C)鋼瓶中充 滿1mol氦氣後,無法再灌入其他氣體 (D)氣體可以無限地膨脹、擴散(E)體積固定的2L容 器含有1mol O,若再通入1mol Hz,則O2的體積為IL 。 ABDEL -21- H,也是2L

第三題為什麼要用現在式

打電 oever 這種 f T 1.L 第一部分:選擇題(60分) 、綜合測驗 「 說明:下面三篇短文共有15題,每篇各有5題,為第1-15題,每題2分,共30分,請依短文 | 文意,選出一個最適合該空格的答案。(合告:意去 閱讀下文,回答第1-5題 For baseball enthusiasts, the name Shohei Ohtani is more than familiar. Born in Iwate, Japan, this baseball legend played a key role in leading the Los Angeles Dodgers to the playoffs in 2024. He then MLB career, guided the team to defeat the New York Yankees in the World Series and earned the team its historic eighth championship. This victory also marked Ohtani's first championship in his seven-year making it his historic 1 2 both Ohtani is widely praised as one of the rare "two-way" players in modern sports, pitching and hitting. As a pitcher, his top speed reaches an impressive 165 km/h, a record among Japanese players, while his unpredictably changing pitches-especially his famous "devil forkball"-have given batters a tough time. As a hitter, he possesses exceptional power, along with a sprint speed that ranks in the top 10% of the Major League Baseball (MLB). In the 2024 regular season, he achieved an incredible "54 home runs and 59 steals," proving his unparalleled versatility and skill as a baseball player. 3 an immense amount of hard work and dedication. As However, behind Ohtani's success early as high school, he began using the "Mandala Chart" method to set and attain his goals. This approach starts with a central goal and branches out into eight related elements, forming a clear roadmap goal was to become "the top draft pick among all teams." To for improvement. At that time, his 4 make it, he set sub-goals such as "pitch control," "speed," "physical strength," and "character," working on each area to develop himself inside and out. 5. "that witte breaks With each record, fans believe that Ohtani has transcended even imaginary baseball heroes depicted in manga. He embodies the true essence of a real-life champion. 1. (A) material (B) mechanic (C) milestone (D) molecule 2. (A) appealing to (B) coping with AQ³. (A) lies (B) lying (C) excelling in (C) lay (D) struggling through (D) lain

我想問一下這個符號是什麼意思啊？我一直找不到，拜託大家解惑一下，謝謝！🙏🙏

3 (2) [ [x]>xdx = -2 2 7 75 (2)

想請問一下 that當形容詞子句和當名詞子句的差別 （下圖） 他有教後面的子句是不是完整的來做判斷 但（我自己想法）後面都是完整子句的部分 或許我理解錯了...？ 所以請各位老師幫我一下

我們都接受在高級餐廳吃團圓飯這個提議。g bind chunnonday 3. The opinion that the minister should be replaced is too extreme. 首相應該要被換掉的這個想法過於極端了。12g saints ghild ✓ 4. The belief that happiness lies in the state of mind is commonly accepted. (that 引導名詞子句當 belief 的同位語,不能省略,不能換成which,後方接 Joolsanniency won s ed lize mords ind bise adhe 完整句子) 相信快樂就埋藏在心中的這個想法已經被廣泛接受了。 beli 5. The belief (that) you hold about the issue is irrational. (that 引導關係子句 修飾 belief,此處that可用which代替,因其為關係代名詞受詞可省略) 你對於這個議題的想法是不理性的。 Q. ②蛋瓜 差