解き方教えて欲しいです。

285 次の式の値を求めよ。 (1) sine+sin(0+²x)+sin(0+17) (2) cos+cos (0+²)+cos (0+1=1)

コレは答えを移してるんですけど、なんでこの答えになるのか分かりません💦他に分かりやすい解き方は無いのでしょうか？教えてください🙇‍♀️

三角比の相互関係 (2) 三角比の相互関係 教p.153 問5 2260° 0 ≦ 180° よって sin0 の値を求めよ。 ( + tan² = cose I'l より 0° ≤0 ≤ 180°, sin²0+ cos²0 = 1, A cos² = ( + tan²0 = (+(-3) ² =10 cost, tan0=3のとき, u よって Tan 0 <0 211, 01298973715 coso <Oz" darbo Cos²0 = // NATT& 10 coso = -√ Fro = -tro 1 3570 10 Leis 10 sind また、tano= cose Fl sino = tano.coso = (-3) × (-10) X (+ fan ²0 COS20 tan B 227 0° ≤ ≤ 180° C, tan = cose, sine の値を求めよ。 sin cos が成り立つ。 JF, tan = (1 dlm F₂7. Cos 0 = -√/₁² = - 5 F₁l, cos² 0 = 9 tanθ<①より、もは鈍角であるから COSOCO sine COSO 11 sin = tan = COSA 3 2 75 COS²0 F4 = (t tan ²0 2 = (~(- / / / ) ²³ 2 =/c/ 5 Kolm = (- +/-/-) × ( - 15/5) 3 のとき、 √5 3

どうしてもわからなくて解答もないので教えて欲しいです

強く発音するところ (9か所)の○を黒く塗りつぶし, ポーズを置くところ(2か所) T.co. に/を書き入れ, CDを聞いて音読しなさい。 1-29 Read Aloud Love is one of life's greatest concerns for men and women, young and old. O ○○ O O O O O

3と4の解き方を教えてください🙇‍♀️

3 各組の文がほぼ同じ意味を表すように,( )内に適切な語を入れなさい。 MELA (1) / On receiving the letter, I wrote back to her. ) ( ) I ( ) the letter, I wrote back to her. (2) / The teacher praised me because I had studied hard. The teacher praised me ( )() hard. (3) / It is impossible to deny that Tom did it. (( )()()( (4) / Needless to say, time is money. ) ( It ( ) ( / How about having a barbecue tomorrow? What do you ( )()( (6) (I couldn't visit you because of urgent business. [Urgent business ( )()(n ) that Tom did it. ) that time is money. 4 動名詞を用いて、日本語を英語にしなさい。 (1) 彼女はさよならも言わずに部屋を出た。 (2) ドアを閉めていただけませんか。 (3) 今日は彼女と買い物に出かける気分ではない。 f you. 本 EST ) a barbecue tomorrow? anisd morite lad to by いいですよ。 (mind を使って) TSN A *+gnied) * deny: …を否定する B C buo

この問題で2枚目のようにとくとダメな理由を教えてください！！！！！ お願いします🙇‍♀️

演習問題 A □2600180°とする。cos0+sino = 1/23 のとき、次の値を求めよ。 (1) sino (2) cos (3) tan 31 32

この問題では、向心力はないのですか。

発展例題19 円錐容器内の運動 z軸を中心軸とする頂角20の円錐状の容器がある。 容器の内 側に質量mの小球があり, 容器の底にある小さな穴を通して, 質 量Mのおもりと糸で結ばれている。 小球は,穴から円錐の側面に為 沿って距離Lの位置を保ち、 容器内のなめらかな斜面上を速さひ で等速円運動しており, おもりは静止している。 糸と容器との間 に摩擦はなく,重力加速度の大きさをg とする。 小球の速さひ を m, M, L, 0, g を用いて表せ。 (筑波大) 指針 小球とともに回転する観測者には, 距離Lが一定なので,小球は,重力,糸の張力, 垂直抗力,遠心力を受けて, 力がつりあって静止 しているように見える。 円錐の側面に沿った方向 の力のつりあいの式を立てる。 なお, 静止した観 測者には,小球は重力, 糸の張力,垂直抗力を受 けて,等速円運動をするように見える。 解説 小球とともに回転する観測者を基準 に考えると, 小球には図のような力がはたらく。 糸の張力は, おもりが受ける力のつりあいから, biant Mg である。円運動の半径 垂直抗力 はLsind なので,遠心力 の大きさはmv²/ (Lsine) となる。 円錐の側面に沿っ m 発展問題 211, 216 z (S) た方向の力のつりあいから, Mg vo² 2 L sine sine 10 -mg cose-Mg=0 Vo=. IO L m (1) OM (M+m cos0) g m m Vo 2 vo² Lsine sin 2 vo² Lsine m mg M mg cose

(2)についてわからないところがあります。 mg•tanθ=mg•(√l’^2-l^2)/lのmg•(√l’^2-l^2)/lはどこからきたのですか。

203. 円錐振り子 自然の長さ ばね定数kの軽いばね の一端を天井に固定し、 他端に質量mのおもりをとりつけ る。 図のように, 天井からの距離が1の水平面内で,おも りを等速円運動させた。 重力加速度の大きさをgとして 次の各問に答えよ。 HOME 000000000000000000000) ľs (1) ばねの長さを, k, l, m, g を用いて表せ。 (2) 等速円運動の角速度と周期を, l, g を用いてそれぞ れ表せ。 例題28 ヒント (1) ばねの弾性力の大きさはk(U-1)であり,この力の鉛直成分と重力がつりあっている。 m

※画像の続きです。 ∠PAQ=θ／2 tanθ／2 二乗=5/3までは分かりました。 ここから、tanθ/2が正か負かを判断するにはどこを見れば良いのでしょうか？

V40 <<πとする。 Oを原点とする座標平面上に3点A(1,0), P (cosé, sine), Q (cos 20, sin20) をとる。また、L=AP2+AQ2 とおく。 (1) = 1のときの値を求めよ。 25 (2) AP, AQ2をそれぞれ cose を用いて表せ。 また, L= であるとき, cose の値を 4 求めよ。 25 (3) L=- であるとき、△OPQ において tan ∠POQの値を求めよ。 また, APQ におい 4 て tan ∠PAQ の値を求めよ。 (配点 50)

答えを教えてください！ よかったら，根拠も教えてください

la vitbl Questions 4-7 refer to the following letter. January 10 Ms. Erin Murphy Customer Service Department Westcoast Airlines Major Miles Program 345 Brook Street Dallas, TX 75218 Dear Ms. Murphy, As per your request during our telephone conversation on January 8, I am sending you Los Angeles International Airport last December. Please note that my ticket was upgraded itinerary and ticket number for my recent roundtrip flight from JFK International Airport business class with a Major Miles Gold Class voucher and should therefore be eligible f full business class mileage credit. 62 Section Il over 15 years. I must confess that I find the new restrictions to your flight voucher pla I am a Gold member in the Major Miles program and have been a Westcoast customer 1 genuinely confusing. I fail to understand why the burden of proof for my mileage cred rests with me. Shouldn't this information be on your ticketing computer? This was my itinerary. MD My ticket number was #YB42565697. Departed JFK, December 22 at 10:20 for LAX Returned to JFK from LAX on December 29 at 16:40 My seat number was 14B. 7B My Major Miles number is # 04356721 (Gold Card). I sincerely hope that this issue will be resolved quickly as I am counting on my miles eame during this trip to upgrade my hotel room next May. Thank you very much for your attention in this matter. Sincerely Yours, Jarrod Watkins Jarrod Watkins 4. 5. 6. What does Ms. Murphy do? (A) She makes airline reservations. (B) She deals with unhappy customers. (C) She issues new tickets. (D) She upgrades people to business class. What is the purpose of this letter? (A) To upgrade his ticket to business class (B) To buy a flight upgrade coupon (C) To complain about his seat reservation (D) To receive more mileage credits How does Mr. Watkins feel about the new frequent flier program rules? (A) He would like them to be simpler. (B) He believes they are unfair. (C) He finds them to be convenient. (D) He hopes that they will benefit hold Card members more. Which of the following is NOT mentioned in the letter? (A) His ticket number (B) His frequent flier level (C) His credit card number (D) His flight information inq M:8 big en enthovenot cold w lar hud,mq 01X in jord is di Hal Unit 2: Letters, E-mails, & Text message chains 63

答えを教えてください！解いたんですが友達と違っていて、教えて欲しいです。 よかったら，根拠も教えてください

January 10 Ms. Erin Murphy Customer Service Department Westcoast Airlines Major Miles Program 345 Brook Street Dallas, TX 75218 Dear Ms. Murphy, As per your request during our telephone conversation on January 8, I am sending you Los Angeles International Airport last December. Please note that my ticket was upgraded itinerary and ticket number for my recent roundtrip flight from JFK International Airport business class with a Major Miles Gold Class voucher and should therefore be eligible fo full business class mileage credit. I am a Gold member in the Major Miles program and have been a Westcoast customer f over 15 years. I must confess that I find the new restrictions to your flight voucher pla genuinely confusing. I fail to understand why the burden of proof for my mileage cred rests with me. Shouldn't this information be on your ticketing computer? 62 Section II This was my itinerary. My ticket number was #YB42565697. My seat number was 14B. Departed JFK, December 22 at 10:20 for LAX Returned to JFK from LAX on December 29 at 16:40 7B My Major Miles number is # 04356721 (Gold Card). I sincerely hope that this issue will be resolved quickly as I am counting on my miles earned during this trip to upgrade my hotel room next May. Thank you very much for your attention in this matter. Sincerely Yours, Jarrod Watkins Jarrod Watkins 4. 5. 6. What does Ms. Murphy do? (A) She makes airline reservations. (B) She deals with unhappy customers. (C) She issues new tickets. (D) She upgrades people to business class. What is the purpose of this letter? (A) To upgrade his ticket to business class (B) To buy a flight upgrade coupon (C) To complain about his seat reservation (D) To receive more mileage credits How does Mr. Watkins feel about the new frequent flier program rules? (A) He would like them to be simpler. (B) He believes they are unfair. (C) He finds them to be convenient. (D) He hopes that they will benefit Gold Card members more. Which of the following is NOT mentioned in the letter? (A) His ticket number (B) His frequent flier level (C) His credit card number (D) His flight information inaba na basa Juu) stevir) | atunim's New malum Unit 2: Letters, E-mails, & Text message chains 63