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Nikitich [7]
2 years ago
15

Se va a colocar una escalera que mide 5 metros (m) de longitud sobre una pared. El fabricante de la escalera recomienda que, por

seguridad, el ángulo que forme la escalera con el piso sea de 78°, ¿Cuál será la distancia sobre el piso del pie de la escalera a la pared?
Mathematics
1 answer:
ivolga24 [154]2 years ago
7 0

Answer:

4.9 m

Step-by-step explanation:

Resolvemos la pregunta anterior usando la función trigonométrica de seno

sin θ = Opuesto / Hipotenusa

θ = 78 °

Hipotenusa = Longitud de la escalera = 5 m

Opuesto = Distancia sobre el suelo = x

sin 78 = x / 5m

Multiplicar cruzada

x = sin 78 × 5 m

x = 4.8907380037m

Aproximadamente

= 4.9 m

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Solution:

Here, to find the point closest to B we need to find the distances PB, QB, RB and SB.

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PB = \dfrac{4}{7}\times 7 = 4\ units

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The point which has the minimum distance from point B, will be nearest to B.

We can clearly observe that SB is the minimum distance.

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