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Leviafan [203]
2 years ago
13

A 4 meter long ladder leans against a 90 degree wall at a 68 degree angle.

Mathematics
1 answer:
Alenkinab [10]2 years ago
3 0

Answer:

Step-by-step explanation:

We use trig to answer these questions:

sin x = opposite side of a triangle / hypotenuse

cos x = adjacent side / hypotenuse

Construct a right triangle with hypotenuse 4 m and lower angle 68 degrees.

The height of the top of the ladder  is then defined by:

sin 68 degrees = height / 4 m, which yields (4 m)(sin 68) = height =

3.71 m

and the distance of the bottom of the ladder from the wall as follows:

cos 68 degrees = horizontal distance / hypotenuse =

1.50 m

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At a birthday party there were five more girls than boys. If the ratio of girls to boys was 4 to 3,
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\\ \sf\longmapsto \dfrac{x+5}{x}=\dfrac{4}{3}

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2 years ago
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