The 15m long crossbar rests on two vertical posts 8m and 20m high. Find the distance between the bases of the posts.
| September 1, 2021 | education
We express the required unsettled distance between the posts using the conditional variable “Y”.
Applying the data of this example and using the Pythagorean theorem, we form the following expression: Y x Y + (20 – 8) x (20 – 8) = 15 x 15.
When we make the calculation, we get the following result Y ^ 2 + 12 x 12 = 225 or Y ^ 2 = 225 – 144 = 81 or Y = √81 = 9 m.
Answer: the distance between the posts is 9 m.
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