Which of the following could represent the unit side lengths of a right triangle F 10, 24, 26

H 7, 11, 13

G 3, 6, 7

J 5, 10, 15​

If tana tanb=k, show that(1+k)cos(a+b)=(1-k)cos(a-b)

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

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