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27.07.2019 •
Mathematics
If you have a 10 foot ladder and you put it against a wall at the ideal angle how high on the wall will the ladder touch assume a 90 degree angle between the wall and the floor use complete sentences and include trig
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Ответ:
A small angle < 45° will get more height but falling backwards off the ladder is more probable. An angle > 45° get's much less height and get's more unsafe the closer to 90° it becomes. I guess you should go with 45° as the ideal angle.
Then the ladder just makes a right triangle with the building.
Opposite side is the height, Hypotenuse is the ladder length.
Soh Cah Toa
Sin(45°) = (height) / (10 ft)
10 × Sin(45°) = height
7.07 ft
Ответ:
1.8 km
Step-by-step explanation:
The scale on the map is 1 : 15000.
This means that every 1 cm on the map is equal to 15000 cm on the ground.
12 cm on the map will therefore be:
12 * 15000 = 180000 cm
Let us convert to kilometres:
100000 cm = 1 km
180000 cm = 180000 / 100000 = 1.8 km
12 cm on the map will be 1.8 km on the ground.