Free Download Trigonometria 3.0.0.0 XAP for Windows Phone
Free Education App by Piane_Ramso

You are downloading the Trigonometria XAP file v3.0.0.0 for Windows Phone. Trigonometria is a free and useful Education app: Application contains about 100 trigonometry ... You can now download the offline XAP file to install & try it.
Download Locations for Trigonometria 3.0.0.0 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Trigonometria XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.