Patent ID: 7096239
Filing Date: 2006-08-22
Classification: G06F

Abstract:
1. A trigonometry calculator having a display and comprising: the calculator being programmed to display operator selectable alternatives of plane triangle calculations each of which determines an unknown parameter from a particular combination of three known parameters; the calculator being programmed upon selection of one of the triangle calculations to display prompts for input of three known parameters fitting the selected triangle calculation; the calculator being programmed to calculate an unknown parameter by applying the selected triangle calculation to the thee known parameters input to the calculator; the calculator being programmed to display the calculated parameter; the selectable alternatives of plane triangle calculations include a side-side-angle calculation, a side-angle-side calculation, a side-side-side calculation, and an angle-angle-side calculation; and for one of the alternative calculations the calculator is programmed to use the side-side-angle calculation for a triangle having a known angle, a known side opposite the known angle, and a known side adjacent the known angle, for calculating an unknown angle opposite the known side adjacent, the side-side-angle calculation comprising: