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Screenshots
Description
Touchable trigonometry.
Trigger fosters a deeper understanding of trigonometry by building your geometric intuition.
The dynamic, touchable "Complete Triangle" figure interprets the six standard trig values as lengths of segments. As the associated angle changes, segments shrink to nothingness or stretch out to infinity, making the nature of individual values clear. The segments also combine to form numerous similar right triangles, revealing many relationships among the values as simple geometric properties. Triggers dual calculator displays allow for exploring these relationships numerically.
NEW IN VERSION 3.0:
▶ Re-designed to support larger-screen (and much-smaller-screen!) devices.
▶ Values are visible while editing calculators.
For information on the Complete Triangle figure, see the document "(Almost) Everything You Need to Remember about Trig, in One Simple Diagram", available at the Tricochet website.
Estimates
Availability
Devices
iPad2Wifi
iPad23G
iPhone4S
iPadThirdGen
iPadThirdGen4G
iPhone5
iPodTouchFifthGen
iPadFourthGen
iPadFourthGen4G
iPadMini
iPadMini4G
iPhone5c
iPhone5s
iPadAir
iPadAirCellular
iPadMiniRetina
iPadMiniRetinaCellular
iPhone6
iPhone6Plus
iPadAir2
iPadAir2Cellular
iPadMini3
iPadMini3Cellular
iPodTouchSixthGen
iPhone6s
iPhone6sPlus
iPadMini4
iPadMini4Cellular
iPadPro
iPadProCellular
iPadPro97
iPadPro97Cellular
iPhoneSE
iPhone7
iPhone7Plus
iPad611
iPad612
iPad71
iPad72
iPad73
iPad74
iPhone8
iPhone8Plus
iPhoneX
Pricing by country
| Country | Price |
|---|---|
| Canada | 3.99 CAD |
| China | 18 CNY |
| France | 3.49 EUR |
| Germany | 3.49 EUR |
| Italy | 3.49 EUR |
| Netherlands | 3.49 EUR |
| Portugal | 3.49 EUR |
| Spain | 3.49 EUR |
| Poland | 3.49 EUR |
| UK | 2.99 GBP |
| India | 249 INR |
| Japan | 360 JPY |
| Poland | 13.99 PLN |
| Russia | 229 RUB |
| Turkey | 12.99 TRY |
| USA | 2.99 USD |
| Korea, Republic Of | 3.29 USD |
| Ukraine | 2.99 USD |
