Can anyone help with this question.

Question

Now suppose that, starting with the first row of seats, the floor of the seating area is inclined at an angle of Theta = 25 degrees above the horizontal, and the distance that you sit up the incline is x, as shown in the figure and question 2a on the following Stewartmath “dot” com “forward slash” dp “forward slash” DP-CH-7-a.pdf.

It is called DP7 - 1 Discovery Project: Where to Site at the Movies.

Thanks so much for the help.