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数学 高校生

自信ないので間違っているところを教えて欲しいです。 解説も欲しいですお願いします。

CoS A が次の値のとき, sin A, tan A をそれぞれ求めなさい。 ※途中式がない場合、 減点となります。 3 1. 次の図で、sin A, cos A, tan Aを求めなさい。 【p.89 例 4~p.91 問5】 B B sin4- STnA-5 4030 B tanA=を cosf cosA=2 3し 13 12 a fanA=ー A37 tanA= 5 2 ら 5。 【有理化 p. 32 例 6] 【D.96 例題3~p.97 問 16】 ※途中式がない場合、 減点となります。 2 sing tanAosA 2. 次の値を求めなさい。 【p.91 例 6~問 7】 STAtcosA-| sin 30°= cos 30°= tan 30°= 3 1 (2) cosA=. sieAtcos A-1で出る 2 (1) cos A= sinA>oである修 sind:信 3 30° sinAt=し sin9>oで sinA = - sinA-会 sinA:2 V3--ト sirAtcostH=1 であるから! si9 +ー。 S simg = に 9 sin'A= sind- (2) sin 45°= |5nA= cos 45 °= tan 45°= 3 sinAz 3 45° sin A= sin A= 3 sing とり CosA tanA = sin 60°= tanA- Sing CosA より cos 60°= tan 60°= 3 5- 5 61 6 | tanA=- 2 tanA-さ 2 Y3 28 2 へ60° tand 3 3 tan A= 5 tan A=23 3. 右の図で,BCの長さを四捨五入して, 小数第1位まで求めなさい。 【p.92 例 7~問 9】 ※途中式がない場合、減点となります。 2 【tan43° の値は、p.171 の表を利用しなさい。】 6. 次の三角比を45° 以下の角で表しなさい。 【p.97 例11~問 17】 (1) sin77° 90-77-13 3C=10X tan4s = 10X0.9325 - 9,325 -9.3 (2) sin53° 90-53-37 B 4.coS3 4,coS 37° (3) cos65° 9.9.3m 43° A 90-65225 (4) cos82° 10m ー 90-62-8 4. 右の図で, Aの値はおよそ何度か。【p.93 例8~問 11】 4.sin25 A, sin8 l。 9

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英語 高校生

この長文の①に入る単語を選ぶ問題で自分はエが1番自然だと思うのですが、不安なのでどなたか教えてくださるとありがたいです。

特殊構文 文法項目 fireworks remain an important part of celebrations in China. In particular, you are ' Fireworks were invented by the Chinese in the seventh century. To this day, C) Houses of Parliament (the meeting place of the British government) with enough 一*gunpowder to destroy the building and kill everyone inside it, including the king In the United Kingdom, fireworks are usually only seen in the first week of November each year. On November fifth, 1605, g Guy Fawkes was caught under *the テーマ 文明·風俗 UNIT 13 O Track 78-80 Reading almost certain to see fireworks during the Spring Festival, otherwise known . Chinese New Year. ©only in the past several centuries, however, ( ① 5 custom of viewing fireworks spread to countries all over the world. For the Japanese, fireworks are commonly viewed in the summer. In fact. on on.. given day of the summer season, you are likely to find a publically organized fireworks display somewhere in Japan. Many people wear traditional summer kimonos or yukata, and enjoy foods and sweets bought from *open-air stalls while watching the 10 fireworks in the night sky. The first fireworks were seen in Japan in 1733. Currently, the biggest fireworks display in Japan is held in Nagano prefecture, where about 39,000 explosions light up the sky. In America, fireworks are closely associated with two important annual events. 79 The first of these events is New Year's Eve. As the clock strikes midnight and 5 people welcome the New Year, fireworks light up the sky, which lets everyone know that the New Year has begun. The fireworks in *Times Square, New York are especially famous and live on TV across the nation. The second event is the Fourth of July, commonly known as *Independence Day. On this day, all Americans celebrate their freedom from the *British Empire and the birth of their country. Moo。 of the fireworks on this night are red, white, and blue in color iust like the flag o! b American's country. aningtai 3 Every year, around November fifth, people on fireworks shows to acroga

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