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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

解決済み 回答数: 1
英語 高校生

【写真】の読むとき、どこを区切りればよいのか教えてほしいです。

Do you know how many children there are in the world? I thought there were 3 million Cnaren in the world. In reálity, there are 2.1 billion children in the world. Do you think they all are Iiving sáfely and cómfortably? It is not true. 356,000 children are troubled by poverty. I Khew foreign children were troúbled by póverty, but I didn't know Japanese children were troubled by póverty. 1 in 7 Children in Japan live in poverty. I was surprised to hear that. Japan is not at war and not a poor country. It is an advanced and developed nation. So, why does it have this problem? 「nere are many causes. First,non-regular employmentis increasing. Non-regular employees don't get enough money and they don't have a stable job. Second, the number of elderly people is increasing. When the number of elderly people increases, it burdens Japan's workload. Finally, single-parent families are increasing. So how can we solve these problems? The first is food support. For example, there are certain projects and corporations that carry out food services and children's cafeterias.Certain food services are free for low-income single-parent families. Children's cafeterias' dishes are free or low price for children. There are about 12 children's cafeterias in Koriyama. Second, schooling support. Children can go to supplemental school and go to lessons set up by a support group. There are various ways to solve the problem. What can we do for poor Japanese children? I think we should understand this present condition and donate money. I want to be a member ofa support group. The day when children in Japan and around the world can live safely and with peace of mind Willit come?I hope that children around the world, including Japan, can live safely and securely. Through the SDGS, I hope we can secure happiness for all children.

回答募集中 回答数: 0
英語 高校生

【写真】を読む時に… •アクセントをどこに付ければいいのか •どこできって読めばいいのか •繋げて読む部分はどこか •語尾を上げる又は下げるところはどこか を教えてほしいです。

Do you know how many children there are in the world? I thought there were 3 million Chiidren in the world. In reálity, there are 2.1 billion children in the world. Do you think they all are Iiving sáfely and cómfortably? It is not true. 356,000 children are troubled by póverty. I Knew foreign children were troūbled by póverty, but I didn't know Japanese children were troubled by póverty. 1 in 7 Children in Japanlive in poverty. I was surprised to hear that. Japan is not at war and not a poor country. It is an advanced and developed nation. So, why does it have this problem? There are many causes. First,non-regular employment is increasing. Non-regular employees don't get enough money and they don't have a stable job. Second, the number of elderly people is increasing. When the number of elderly people increases, it burdens Japan's workload. Finally, single-parent families are increasing. So how can we solve these problems? The first is food support. For example, there are certain projects and corporations that carry out food services and children's cafeterias.Certain food services are free for low-income single-parent families. Children's cafeterias' dishes are free or low price for children. There are about 12 children's cafeterias in Koriyama. Second, schooling support. Children can go to supplemental school and go to lessons set up by a support group. There are various ways to solve the problem. What can we do for poor Japanese children?1 think we should understand this present condition and donate money. I want to be a member of a support group. The day when children in Japan and around the world can live safely and with peace of mind Will it come?l hope that children around the world, including Japan, can live safely and securely. Through the SDGS, I hope we can secure happiness for all children.

回答募集中 回答数: 0