Mathematics
Senior High
高一数学I
三角比の変換の計算問題です。
誰か至急教えてください！！
お願いします！！！
1
(3)
tan 20
15
1
cos2 (90°-0)
Costo - Sil
7J0319
219 COS
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![基本例題の[2]についてです。ここの条件ですが、
a/3<=1<=4a/3とありますが4a... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1810404/thumb_l_webp_70236300-B387-4A8D-A246-76C58E626EEE.webp?Expires=1787725882&Signature=E8Gf8HNsMzSqn9aRdBrJ6ko2bWCtr8YPOH6OXMkw2YKsMD~GBW49zvUeLl84uXKlJQctpX8Z-gDcedi6tY2Em87l6kzhy2cXSgTPxhuxQMK0LZsCIjrLdFJI~A7dxlbp5B7NYpReHyGebPWw0zie1QGrxGTgPjuzmxa22csI13~bkinuYQ~oAp9ctR1rvk5PHmGGX0caUaB9w7IsXA555mE7h6n-csY6tWDYO~BIbKlwl-aTiVin9soq~THP-Z6c0JOMOLwDbbg7wwWFRySWfr3rdkOsce16MlJ2DsHcwWVPO~GmoEc2g2s7pxZQZ0LhTFHiHGEUbAL7M0FxN-bxVw__&Key-Pair-Id=K2W722D70GJS8W&Expires=1787725882&Signature=Oksvx0WXoe7fOfW6EfHHudgKSNKC9NuqemXXKw1ib7u2Esje45FFFx2~T9xIX3Vq7Y5W4rPK~2kVwDxNc4iLtkQg6D8w5zd4PN9Lk51W~sidfLHblK7JlBBfIKitMP5I45P82LRQj7Or7kGhw~Pp8uIwXMNmvs8rsMXtdnqLNQ63slIPq0Rt1MCkRLg4KAjs1v3rY~VHbbT9obPlnrabpYZOdgQgzLz9Zv6ruk-uV0GgiEeLi7HWOYcC1fl-AIw7WrjuEx5RyJAepcS-ytNID5IedJBO3ZslenraNQ9EUZfQIT90JhLbQkHOgSgsjid6jjVZX4aPldEr~2oZnV1nFA__&Key-Pair-Id=K2W722D70GJS8W)
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