I'm confused about how to solve this problem. The answer says 1/2 but I don't know how they got that.
Sin[ sin^-1 1+ cos^-1 1/2)
收錄日期: 2021-04-23 23:08:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20210127074714AAfGGfg