To use the Pythagorean theorem to find the length of cable the technician needs, we need to know the distance he needs to cover and the height difference between the two points.
Let's say the distance he needs to cover is 1000 feet and there is a height difference of 200 feet between the two points.
Using the Pythagorean theorem, we can find the length of cable he needs:
c² = a² + b²
where c is the length of the cable, a is the distance he needs to cover, and b is the height difference between the two points.
Plugging in the values we have:
c² = 1000² + 200²
c² = 1,040,000
c = √1,040,000
c ≈ 1,020.62
Therefore, the technician needs approximately 1,020.62 feet of cable to fulfill his duty.