There was a huge requirement for a free Trigonometry Reference Guide as there were only paid apps on this particular topic. Now, this was changed. A new and effective Trigonometry quick reference guide was launched for android phones. The navigation is very effective. You can find almost all the important formulas in just a couple of taps. Trigonometry Quick reference guide has all the important formulas and concepts covered to help the student review them on regular basis. Topics include: a) Definitions - Right Triangle Definition and Unit Triangle definition b) Facts and properties of trigonometric functions i.e., Domain, Range and period c) Formulas and Identities (includes Tangent and Cotangent Identities, Reciprocal Identities, Pythagorean Identities, Even/Odd Formulas, Periodic formulas, Double Angle formulas, Degree to radian formulas, Half-angle formulas, Sum and Difference formulas, Product to sum formulas, Sum to product formulas, and Co Function Formulas) d) Unit circle explained e) Inverse Trigonometric functions and its properties f) Law of sines, Cosines and tangents which are define the relationship between the angles of a triangle and its sides. I wish this app to be use-centric. So, I would like to request you to try this app and make any suggestions to improve it further. I will be happy to provide updates based on your inputs. Link: https://market.android.com/details?id=com.nuzedd.TrigonometryQuickReferenceGuide

I am really sorry to hear that. I wish I could have made it sooner...Thank you for your support though. I appreciate it.