Might need a little bit explanation for these questions, thanks

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

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Is it greater than or less than7*3_9*2