これはどうして辺ADはねじれの位置にある辺なのですか、？教えていただきたいです！

(2) 図のような, AB=4cm, AC=3cm, BC=5cm, AD=6cm, ∠BAC=∠BAD=∠CAD=90°の三角柱ABC-DEF がある。 辺BC上にあり,頂点B に一致しない点をPとする。点Qは,辺EF上にある点で, BP=FQである。 く BP=2cmのとき, 点P, Qを結んでできる直線PQ とねじれの位置にある辺の数はい つか。 <東京> A H P B E

この問題の解き方がアルハゼンの定理のやり方しか載っておらず、それ以外の解き方を教えてくれませんか？

練習3 右の図のように, 円周上に点A,B,C,Dがあり, 線分DBは∠ADCの二等分線である。 また,点Eは 線分ACと線分DBとの交点である。 ∠BEC=86° のとき, ∠DABの大きさを求めなさい。 A E D B

【至急】帝京大学2023年数学の過去問です。 解説お願いしたいです🙇 どなたかお願いします🙏

|-53- 〔1〕 数学(総合) 〔2〕 (1) 752-2の整数部分をa､小数部分をbとするとき. b= ア さらに, (2) 4x+ 1 4x = 経済・法・文・外国語・教育・医療技術・福岡医療技術学部 bx+y 2-b となる。 (1) aを定数とする。 xの2次方程式 y= イ ウ となり (a+26)²= =bを満たす有理数x, y は, x = カキ =√5のとき、64x+6 x 2 + (a + 1)x + α² + α-1=0 ...... ① <a< について, 判別式Dは. D=- ア a². a+ ウ となる。 したがって, ① が異なる2つの実数解をもつαの値の範囲は, エオ カ ⑩x238 ① 38 < x 39 239 < x² ≤ 40 コサ ③ 40 <x≦41 ④ 41 < x² キ したがって, xの整数部分が コ (2) 正の数xとその小数部分yに対して, x2+y2 = 40 ① が成り立つとする。 xについて次の⑩~④のうち,正しいものは ク である。 エオとなる。 サ となる。 y=クケとなる。 となる。 ケ とわかる。 これと①より. 〔3〕 αを定数とする。 放物線y=-x-ax +7････ ① について考える。 放物線 ① について次の⑩~④のうち,正しいものはア とイ である。 ただ し、解答の順序は問わない。 〔4〕 ⑩ 放物線①は上に凸である。 ① 放物線①は下に凸である。 ② 放物線①はx軸と共有点をもたない。 3 放物線①はx軸と共有点を1つだけもつ。 ④ 放物線 ① は x軸と共有点を2つもつ。 -1≦a≦3における放物線① の頂点のy座標は,a= ウ のとき最小値 I カキ ク a= オ のとき, 放物線①は, 放物線y=-x²+xのグラフをx軸方向に ケコ y軸方向に サ だけ平行移動したものとなる。 をとり, a= COSA= (1) AB = 7,BC=5,CA=4√2 の△ABCについて さらに, sin B = siny_ sin a オ である。 さらに, sin B sina ア イ である。 のとき最大値- コサ シス である。 また, 外接円の半径は カ をとる。 キ である。 (2) AB = 4,BC=7. CA = 5の△ABCの辺BC上にBD =3となる点Dをとる。 ∠BAD = α, ∠CAD = β, ∠ADB=y とする。このとき ク ウ オ I である。

なぜ、答えが AC＝4cm になるのか教えてほしいです🙇‍♀️

(2) 右の図で, ∠BAD=∠CAD, AB=6cm、 BD = 4.5cm, CD=3cmのとき, ACの長さを求めなさい。 円の B D

何時間も考えましたが一向に分かりません。 教えていただけると嬉しいです。

110 2014 年度 数学 4 半径rの円P と半径1の円Qの二つの円がある。円Qは円Pの円周上の点Aと 信州大-理・医・繊維 〈後期〉 その中心を通る。 また, 円Qには一辺の長さがαの正三角形ABCが内接している。 円Qの弧 BC上に新たに点Dをとるとき, <CAD =0として次の (1) (4) の 問いに答えよ。 ただし, 0°<0 <60°とする。 (1) 三角形ACDの面積をaと0を用いて表せ。 (2) 三角形BCDの面積をaと0を用いて表せ。 (3) 三角形ACDと三角形BCDの面積の和が最大となるときの母を求めよ。 (4) 円Pに内接する正三角形AEF について考える。 円P の弧EF上に新たに 点Gをとるとき, 三角形AFGと三角形EFGの面積の和の最大値を求めよ。 ただし, 0°<<FAG < 60° とする。

大門5の2番合ってますか？ 教えてください🙇‍♀️

ig Point マイン・カフォンと は何ですか。 エクトコ Look at this picture. Can you imagine what the device for clearing landmines. It is made of an iron ball object is? It is Mine Kafon, a wind-powered Rolling along the ground, it and bamboo legs. 5 steps on a landmine and explodes it. Even today, there are about 110 million landmines in the world. Every 22 minutes, one person is injured or killed by Many of the victims are ordinary This device is expected to reduce the landmines. people. number of landmines in the world. Mine Kafon made of? landmines are there in the world today? Massoud Hassani, a designer, wanted to solve landmine problems with the power of design. He was born in Afghanistan in 1983. At that time, there were several wars going on there. Massoud and his family lived in an area surrounded by landmines. as a child, Massoud made all his toys Living there by hand. His favorite toys were paper-made objects that were rolled by wind power. Because his toys often landed in areas with landmines, he could not get them back. Questions AMI PERHE designe des di A マスードさ のころに ちゃを Where and when was Massoud borm 2 What did Massoud make by hand

大門2合ってるか確認して欲しいです お願いします

ig Point マイン・カフォンと は何ですか。 エクトコ Look at this picture. Can you imagine what the device for clearing landmines. It is made of an iron ball object is? It is Mine Kafon, a wind-powered Rolling along the ground, it and bamboo legs. 5 steps on a landmine and explodes it. Even today, there are about 110 million landmines in the world. Every 22 minutes, one person is injured or killed by Many of the victims are ordinary This device is expected to reduce the landmines. people. number of landmines in the world. Mine Kafon made of? landmines are there in the world today? Massoud Hassani, a designer, wanted to solve landmine problems with the power of design. He was born in Afghanistan in 1983. At that time, there were several wars going on there. Massoud and his family lived in an area surrounded by landmines. as a child, Massoud made all his toys Living there by hand. His favorite toys were paper-made objects that were rolled by wind power. Because his toys often landed in areas with landmines, he could not get them back. Questions AMI PERHE designe des di A マスードさ のころに ちゃを Where and when was Massoud borm 2 What did Massoud make by hand

この文章の4行目にある、because they would harm whatever bacterial life forms might be present on the planet の文構造についてなのですが、might の前にあるはずの関係代名詞の主格whi... 続きを読む

次の文章を読んで、 問1~4に答えなさい。 The establishment of a colony on Mars has been a dream for decades. Inevitably some people have objected to the idea of colonizing Mars on both ideological and practical grounds. Some object to humans living on Mars because they would harm whatever bacterial life forms might be present on the planet. Others oppose Mars settlements because they disagree with the idea of using the Red Planet as a "backup" in case the Earth is destroyed. Those in favor of colonizing Mars, however, look to spread the human race beyond our single planet. The practical considerations of surviving long term on a world without a breathable atmosphere, no surface water, exposure to radiation, and extremes of heat and cold all have to be addressed first. Mars colonists could survive in domed cities, extracting and recycling resources from the Martian environment. However, a more interesting plan for the settlement of the Red Planet involves a process called terraforming, turning the dangerous environ- ment of Mars into something resembling Earth. Billions of years ago, Mars was more like Earth, with a thick atmosphere as well as oceans and rivers of surface water. The planet may well have had complex life forms. However, sometime in the distant past, Mars lost its (A ). When Mars found itself without the protection of that field, solar wind relentlessly stripped it of its atmosphere, quickly turning the planet into the frozen desert it currently is. While a number of schemes exist to restore Mars' atmosphere, creating a runaway greenhouse process that would raise its temperature, NASA and some academic researchers recently came up with a simple way to achieve the process naturally. The idea involves the creation of an electromagnetic shield between Mars and the Sun to protect the Red Planet from solar wind. Without the solar wind stripping it away, the atmosphere of Mars would gradually become thicker. Soon the temperature on the Martian surface would become high enough to release the trapped ( B ) at the poles, accelerating the (C). Water ice at the poles would melt, giving Mars back some measure of its oceans and rivers. All humans would have to do is introduce

(1)〜(4)まで全て分かりません🥲教えてくれると嬉しいです！

for Expression Writing [文章の誤りを直す] /16 (4点) 8 Answer the following questions. 次の文章は、あるアメリカの高校のウェブサイトにある学校紹介ですが､ 文法や内容に誤りが あるようです。 下線部 (1)~(4) の誤りを直し、 下線部全体を記述しなさい。 Star High School (1) has been one of the best school in San Francisco for the past 20 years. It is known as a school with quality teaching and various school events. Our school provides (2) as few as 20 school activities in the three academic years and has over 10 societies and clubs. We welcome students from all cultural backgrounds. (3) Since the school have started in 1998, our students have come from different towns in the San Francisco area and neighboring cities, (4) or they are all interested in the differences and uniqueness they find on campus.

この英文のどこに同様という訳の語があるのですか？

Almost since the first days of European settlement, South Carolina has been rice country. Rice was once to South Carolina what tobacco was to Virginia and cotton was to Texas. Car Vinkini (神田外語大)