Languages
English,French,German,Japanese,Korean,Portuguese,Russian,Chinese,Spanish
About this app
Trig Formula is an offline trigonometry review tool designed for high school students and self learners. It focuses on common test topics such as trigonometric values, reduction formulas, the unit circle, and radian-degree conversion. No login, internet connection, account registration, cloud sync, social features, or personal data collection is required. Core features include quick lookup for common trigonometric formulas, organized by angle, radian, quadrant, and topic; visual unit circle practice for memorizing special-angle values; step-by-step reduction formula drills with accuracy and mistake tracking; radian-degree conversion and quadrant judgment exercises; and a local mistake book with mastery statistics stored only on your device.
Screenshots
Features
- 1. Formula Quick Reference: Organize special angle function values, co-angle relationships, sum-difference-half-angle, and induction formulas
- Supports quick navigation by exam topic
- 2. Unit Circle Practice: Memorization training through quadrant, angle, radian, and coordinate relationships
- Ideal for reinforcing special angles
- 3. Induction Formula Training: Generate questions of varying difficulty levels
- Step-by-step judgment of sign changes and function name variations
- Reduce mechanical memorization errors
- 4. Angle Conversion Practice: Provides common angle conversion exercises and instant verification
- Record Common Conversion Errors
- 5. Local Error Review: Automatically saves incorrect answers, accuracy rates, and mastery status
- Supports Knowledge Point Review