Draw the right triangle. Label the non-right base angle as being eight degrees, and label the base (the "adjacent" side) as being 5000 units.

You are asked for the height (the length of the "opposite") side, so use the tangent ratio.

Draw the nested right triangles. Label the non-right base angles with the given angles. Label the portion of the base between the two non-right base angles as "1" (for "one mile"), and label the rest of the base as "x".

You are asked to find the height. Label this shared side as "h".

You now have two angles and the ratios h/x and h/(x + 1). Use the tangent ratio to solve for h.

If you get stuck, please reply showing how far you have gotten in working through the steps. Thank you!