Answers
Answers
加法定理を使います
sin40°cos50°+sin50°cos40°
=sin40°cos50°+cos40°sin40°
=sin(40°+50°)
=sin90°
=1
ありがとうございました!
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
![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=1787721066&Signature=aleJ5WrGyzujmMyvW6y0LDYM73McBymt8-Mum7QqxTwllkg~CErgu5TPKikUeD0YqLjWYka38tiMO03CiJhvbuHp7JWzfNTSgwQM7IRFLc3Fjv2f6ASMylEtEQ82nCr8B3oNT8jPw89SYGFeE6L1KiKz4dGiRPFoqJPGzEBRYs7KIAWFRRayo~bxq8OWmoiDZGbjUvB6cM-p2UWLegg9AsPk-xA7rC~kFUSMM-MV450Gn-1~x1UozquNf35BLAPZkHD4wqSJ3cKknCARiGlsxHjRYXdDRoVS4AwMFHJ27GUUkV7OJHTby1SMDYC7cVeWFHDVnYAZvuHWxOsABpuiFg__&Key-Pair-Id=K2W722D70GJS8W&Expires=1787721066&Signature=arH~jh18QkVte0s5WSYZi96W5Lef7Sosk0IkLW4SAu2VkqXHYWpqvhVxnx0qTvIpOaikyqN~jc~kLrOmVHx3UqsvKrj1SWoY0jCwnGR0MCJoe6pXpi0ljvVnjZOo4Fo0RPKaHqL3r3sACsWkmTy3CktwTdo-KIoK-5dqbDev32OSzicyoTg50SQKHvEdtXfrgY1iJNhmus-2xKL~za2WriVVjJFiVqwGTRGaupduz~FpvrbVXvnwyCf5~~l5ZjXz-e01IDJ-Tpw2df4HM-hQMGCUOeUCTv80sBvLM-9zjnksvmjzeRyC7Nco5Zi760ekwKFdMltLzJoRbpxtFVPNWw__&Key-Pair-Id=K2W722D70GJS8W)
Recommended
詳説【数学Ⅰ】第二章 ２次関数（後半）～最大・最小・不等式～
6137
25
詳説【数学Ａ】第２章 確率
5863
24
数学ⅠA公式集
5748
20
詳説【数学Ⅰ】第二章 ２次関数（前半）～関数とグラフ～
5158
18
ありがとうございました!