75% of a number Decrease x by 25%

This is different from the first one can someone me

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

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