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Yahoo Bid Books & Magazines Science & Technology Mathematics
■ニュートン式超図解 最強に面白い!! 三角関数■
        

  • Product Quantity
    : 1
  • Starting Bid
    :300円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2026年05月04日 14時48分
  • Bidding closes on
    :2026年05月10日 20時48分
  • Auction Number
    :r1226381041
  • Condition
    :State it in the description
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
Notes
  1. The seller does not provide return compensation and other responsibilities
ニュートンプレス発行 定価:900円+税  【「三角関数」という言葉を聞いたことはありますか。高校生以上の読者であれば,三角関数のたくさんの公式や考え方に苦しめられた経験があるかもしれませんね。一方で,三角関数なんて知らない,という読者も多くいることでしょう。 三角関数は,古くから土地の面積や距離を測るための便利な“道具”として,活用されてきました。さらに現代では,三角関数は私たちの身のまわりで大活躍しています。なんと,毎日見るテレビの放送から,地震の解析,そしてスマートフォンでの通信まで,たくさんの技術が三角関数によって支えられているのです。 本書では,三角関数の基本や成り立ち,社会との関わりを“最強に”面白く紹介しています。随所に登場する問題を解きながら読み進めていくことで,三角関数をゼロから学ぶことができます。三角関数の世界を,どうぞお楽しみください! 目次 ●三角関数ってなんだろう? ●1 三角関数の誕生前夜(直角三角形を使った、古代エジプトの測量方法;三角関数の土台、三角形の「相似」とは? ほか) ●2 三角関数の基本(天文学の発展によって三角関数が生まれた;「サイン」って何? ほか) ●3 サイン、コサイン、タンジェントの深い関係(サインとコサインの関係;サインをコサインで割るとタンジェントになる ほか) ●4 三角関数が波をつくる(円で考えるとわかりやすい三角関数;90°よりも大きな角度のとき三角関数の値はどうなる? ほか)】  未読品ですが個人保管ですので、ご理解の上ご入札下さい。ノークレーム・ノーリターンでお願い致します。早期終了・即決には対応しておりません。複数冊落札いただいた際はまとめて取引が可能です。落札いただいた商品と発送先を確認させていただき、一番安価な発送方法をご提示致します。(但し、クリックポストの発送は2個口までとし、3個口以上になる場合はレターパックプラスまたはゆうパックでの発送と致します。) 詳しくはヤフオクの「まとめて取引の条件」をご確認ください。また、落札後3日以内にご連絡及び1週間以内にお支払いを頂けない場合、お取引不可能と判断し、落札者様都合によるキャンセルとさせて頂きます。尚、土日祝日の発送は致しておりません。ご了承下さい。
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International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: ■ニュートン式超図解 最強に面白い!! 三角関数■
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my