English
V
:
A car is traveling up a steep ramp to a parking garage.
The ramp is 445 feet long and rises a vertical distance
of 80 feet. What is the angle of elevation from the car
to the end of the ramp? Round to the nearest degree.
10°
18
445 ft
__$45 A
80 ft
804
80°
) Intro
Done

  10°

Step-by-step explanation:

In a right triangle, the ratio of the side opposite an acute angle to the hypotenuse is the sine of the angle. Here, that ratio is 80/445, so we have ...

   sin(angle of elevation) = 80/445

Using the inverse sine function we can find the angle that has this sine value.

  angle of elevation = arcsin(80/445) ≈ 10.36°

The angle of elevation is about 10°.

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

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