Overview

This is a small C++20 program that visualizes basic trigonometric relationships on a circle.
It was written in under three hours as a simple exploration of vector math and geometry

Purpose

• a vector constrained to the circle
• the angle it forms with the horizontal axis
• cosine and sine projections
• a tangent line derived from the vector direction = geometric tangent and not triogonemtric tangent
• determinants for signed orientation

Implementation

• C++20
• SFML for rendering
• custom math helpers (dot product, determinant, projection, normalization)

The structure is intentionally minimal to keep the focus on the trigonometric concepts.