The problem is modelled as right angle triangle, shown in the diagram below
The distance between the pilot and the house is labelled as

Using the trigonometry ratio of sine


Answer:
the answer is 46.47937775048613
Between the 4 and the 7 is it a multiplication or an X?
If the multiplication sign, this is the solution

T=100(1.5^t)
Where T is number of trout and t is time in years applied as an exponent to the 1.5 factor