Answer:
about 149 ft
Explanation:
cosine of 43 degrees is about 0.73 (can be found using calculator)
cosine is the adjacent side divided by the hypotenuse, so:
adjacent/hypotenuse=0.73
we know the adjacent is 109 so
109/hypotenuse=0.73
solve for hypotenuse
109/0.73=149.3
so the hypotenuse is about 149 ft