In which functions can you quickly find the x-intercepts of their graphs

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in

Tan198=asin164=? how to solve this? ?