【暗記NG】和積公式を"一瞬で"導く方法をゼロから解説

Transcript

Hello everyone, this is Konohara from starry. First of all, I would like to say that in this video, even those who have skipped the seat formula for trigonometric functions will definitely be able to do it. There are quite a lot of people who are not good at regular formal arcs of trigonometric functions, but I'm talking about the 8 methods of this... Read More