SDL: examples/renderer/03-lines: Fix incorrect angle calculation rendering circle.

SDL Commits
1 
From 8be18741e1ecd085fbf55b9bb14abb6aa1aa095d Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Fri, 5 Dec 2025 10:33:06 -0500
Subject: [PATCH] examples/renderer/03-lines: Fix incorrect angle calculation
 rendering circle.

This fix was contributed by GitHub user hushangazar (thanks!).

Closes #14599.
---
 examples/renderer/03-lines/lines.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/renderer/03-lines/lines.c b/examples/renderer/03-lines/lines.c
index 2e9405abee5d4..b5e8f14318072 100644
--- a/examples/renderer/03-lines/lines.c
+++ b/examples/renderer/03-lines/lines.c
@@ -77,8 +77,9 @@ SDL_AppResult SDL_AppIterate(void *appstate)
         const float size = 30.0f;
         const float x = 320.0f;
         const float y = 95.0f - (size / 2.0f);
+        const float r = (float) ((double)i * (SDL_PI_F / 180.0));
         SDL_SetRenderDrawColor(renderer, SDL_rand(256), SDL_rand(256), SDL_rand(256), SDL_ALPHA_OPAQUE);
-        SDL_RenderLine(renderer, x, y, x + SDL_sinf((float) i) * size, y + SDL_cosf((float) i) * size);
+        SDL_RenderLine(renderer, x, y, x + SDL_cosf(r) * size, y + SDL_sinf(r) * size);
     }
 
     SDL_RenderPresent(renderer);  /* put it all on the screen! */