Hàm số nào sau đây có tập xác định là D=R \ { pi/2 +kpi }

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish