Pole — Precalculus, what it means and where it is taught
The origin, where r = 0.
Taught in Precalculus.
Where it is taught
Practise this idea
1 question in the course bank use Pole, in Similarity & Proportionality.
Problem 1
A 6 ft pole casts a 9 ft shadow. At the same time a building casts a 120 ft shadow. Find its height.
Worked answer
80
69 = h120
9h = 720
h = 80 ft