The upper ends of two vertically standing pillars, at a distance of 3.4 m, are connected by a crossbar. The height of one pillar is 5.8 m, and the other 3.9, find the length of the crossbar
Distance between posts, 3.4 m; the difference in the heights of the pillars (5.8 m and 3.9 m), and the crossbar itself, n, represent a right-angled triangle, we will paint its sides.
Leg 1 – distance 3.4 m, leg 2 – difference (5.8 – 3.9) m; the size of the crossbar is the hypotenuse, which can be found by the theorem:
n ^ 2 = 3.4 ^ 2 + (5.8 – 3.9) ^ 2 = 3.4 ^ 2 + 1.9 ^ 2 = 11.56 + 1.61 = 15.17 (m ^ 2) , whence the size of the crossbar:
n = √ (15.17) = 3.89 (m).
Answer: 3.89 m.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.