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2 years ago

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A ramp leading into a building makes a 15 degree angle with the ground. The end of the ramp is 10 feet from the base of the buil

ding. Approximately how long is the ramp? Round to the nearest tenth.

2 answers:

Soloha48 [4]2 years ago

8 0

Answer:

10.4 feet.

Step-by-step explanation:

Let l be the length of the ramp which is leaning against the building,

Given,

The ramp makes a 15 degree angle with the ground.

Also, the distance of one end of ramp from the base of the building = 10 feet,

A building is generally supposed to perpendicular the ground,

Hence, By making the diagram,

We get,

$cos 15^{\circ}=\frac{10}{l}$ ( Trigonometric ratio ),

$\implies l = \frac{10}{cos 15^{\circ}}=10.3527618041\approx 10.4$

Therefore, the ramp is approximately 10.4 feet long.

zavuch27 [327]2 years ago

6 0

Trigonometry- use cos ( adjacent/hypotenuse)

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3 years ago

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3 years ago

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dimaraw [331]

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3 years ago

If the slope of a line is -1 and two points on the line are (-9, 3) and (-10, r), what is the value of r?

ANEK [815]

Answer:

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Step-by-step explanation:

We know that the slope of the line is -1.

We also know that the line passes through (-9, 3) and (-10, r).

We want to find the value of r.

First, let's figure out the equation of our line. We can use the point-slope form:

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And we're done!

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