potisan https://blog.hatena.ne.jp/potisan/ 徒然メモ https://unknown-memo.hatenablog.com/ 数学 Rとggplot2で描画した正弦二乗と余弦二乗の関係式のグラフです。視覚的にも赤線と青線の和、緑線が任意のθについて1に等しいことが分かります。 library(conflicted) library(tidyverse) x <- seq(-2*pi, 2*pi, by=0.01) ggplot() + theme_classic() + theme(axis.title=element_blank()) + coord_cartesian(ylim=c(-1, 1)) + geom_vline(xintercept=0, col="darkgray") + geom_hline(yinte… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Funknown-memo.hatenablog.com%2Fentry%2F2025%2F01%2F01%2F212721" title="(sinθ)^2+(cosθ)^2=1のグラフ - 徒然メモ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/p/potisan/20250101/20250101212704.png Hatena Blog https://hatena.blog 2025-01-01 21:27:21 rich https://unknown-memo.hatenablog.com/entry/2025/01/01/212721 1.0 100%