ANSWER:
549.9 ft
Explanation:
We can calculate the value of AB, but first we must calculate the value of CD and DA by means of trigonometric ratios, finally I calculate the value of DB and from that value we subtract the value of DA and thus we will obtain the value of AB.
We calculate CD through sine and DA through cosine, just like this:
Now we calculate the value DB by means of that of the tangent of the angle of 22°, thus
Now, AB would be: