Задача Задача №243555
А
А
AB = sqrt((CA)^2 + (CB)^2) = sqrt((75)^2 + (40)^2) = sqrt(5625 + 1600) = sqrt(7225) = 85
sin B = CB / AB = 40 / 85 = 8 / 17
cos B = CA / AB = 75 / 85 = 15 / 17
AB = sqrt((CA)^2 + (CB)^2) = sqrt((75)^2 + (40)^2) = sqrt(5625 + 1600) = sqrt(7225) = 85
sin B = CB / AB = 40 / 85 = 8 / 17
cos B = CA / AB = 75 / 85 = 15 / 17
