Trigonometric Formulas is an Android application developed by MyAppBook that provides a comprehensive directory of trigonometric formulas. It is a free application that falls under the category of Education & Reference. The app offers an extensive list of formulas, including basic trigonometric identities, formulas of double and triple arguments, half-argument formulas, and more.

The app also includes a table of values for the main trigonometric functions, relations of inverse trigonometric functions, and signs of trigonometric functions in quarters. Users can use the formulas to solve mathematical problems and equations. The app's interface is user-friendly and easy to navigate, making it a great resource for students studying trigonometry. Overall, Trigonometric Formulas is a must-have app for math students who want a comprehensive resource on the subject.