Beautiful Trigonometry vs The Unit Circle App

Trigonometry doesn’t have to be confusing. When my daughter first met sine and cosine in school, she asked, “Why do we even need this?” We tried formulas, practice sheets, even flashcards — but it still felt like memorizing rules without meaning. So I built a way to make it visible. With sliders, color, and motion, she could see how angles and sides connect — how triangles breathe, how waves emerge, and how every formula has a shape behind it. That small experiment became Beautiful Trigonometry — an interactive app that turns math from abstract to intuitive. Instead of memorising, explore. Move a slider, rotate a triangle, or trace the unit circle — and suddenly, sine, cosine, and tangent make sense. You’ll discover how to: - Understand how angles and sides connect - See how triangles and graphs reflect each other - Build intuition with the unit circle - Learn faster using animations and instant feedback Free to explore: - Acute Angle Trigonometry: sine, cosine, and tangent made visual - Full Circle Functions: understand sine and cosine across 360° - Triangle Area: learn the sine area formula interactively - Law of Cosines: see it work step by step Upgrade to PRO and unlock: - Graphs of all trig functions: sine, cosine, tangent, cotangent, secant, cosecant - Trig Identities & Formulas: a complete reference Perfect for - Students who want trigonometry to finally click - Teachers and tutors explaining visually - Anyone who loves learning through discovery You won’t just study trigonometry — you’ll feel it click. Part of the Beautiful Math series. Learn visually. Understand deeply. Move ahead.

Reference the unit circle with ease! The Unit Circle App makes trigonometry simple and interactive. Drag points around the circle to instantly see sine, cosine, and tangent values, radians, degrees, and coordinates. Perfect for homework, school, or brushing up on your math skills. Features: * Interactive unit circle you can explore by touch * Instantly see angles in degrees and radians * Automatic calculation of sin(θ), cos(θ), and tan(θ) * Clear visualization of coordinates on the circle * Simple and distraction-free design for studying Whether you’re preparing for exams, doing homework, or learning trig for the first time, The Unit Circle App is your go-to tool for mastering trigonometric functions.