This application provides a free reference guide for trigonometric identities and formulas, which are used to solve mathematical problems and explain the relationships between sine, cosine, tangent, and cotangent. The appendix includes formulas for double angles, cosine and sine of double angles, lower degree formulas, and fundamental trigonometric identities (equalities). The values of trigonometric functions for the most typical angles are also provided.

This Android app is perfect for students or basically anyone who is looking to learn more about trigonometry with ease. To do so, the app utilizes a clean and easy to use interface for its users to enjoy.