Triangle Calculator by November31 is a free Android app that helps solve triangles by entering two sides and one angle, two angles and one side or three sides. It is ideal for students, teachers, and professionals who need to perform trigonometry calculations on the go. With over 1 million downloads, Triangle Calculator has proven to be a popular choice in its category.

The app offers angles in degrees, radians, grads, or degrees with minutes and seconds. The ▲² button shows the second solution if one exists (ambiguous case). The app also has a paid ad-free version available for users who prefer an uninterrupted experience. Additionally, if you find a translation error or want to help with a new translation, you can contact the developer through email. Overall, Triangle Calculator is a useful tool for anyone who needs to solve triangles quickly and accurately.