What is the recommended ladder angle for safe placement, expressed as a ratio?

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Multiple Choice

What is the recommended ladder angle for safe placement, expressed as a ratio?

Explanation:
Setting a ladder at the right angle is crucial for stability. The 4:1 rule says for every 4 feet of ladder height, the base should be 1 foot away from the wall. That makes the angle about 75–76 degrees because tan(theta) = height/base = 4/1. This angle helps keep the ladder’s center of gravity over its base, maintains good contact with the rungs, and reduces the chances of tipping backward or sliding at the base. Other angles either lean the ladder too vertical or too shallow, increasing risk. So the recommended ladder angle expressed as a ratio is 4:1.

Setting a ladder at the right angle is crucial for stability. The 4:1 rule says for every 4 feet of ladder height, the base should be 1 foot away from the wall. That makes the angle about 75–76 degrees because tan(theta) = height/base = 4/1. This angle helps keep the ladder’s center of gravity over its base, maintains good contact with the rungs, and reduces the chances of tipping backward or sliding at the base. Other angles either lean the ladder too vertical or too shallow, increasing risk. So the recommended ladder angle expressed as a ratio is 4:1.

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