An elevator descends at a constant speed. What is the
1 answer:
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Answer:
The rotational angle of a regular polygon with 72 sides is 5º.
Step-by-step explanation:
The rotational angle (), measured in sexagesimal degrees, of polygon of
sides is the angle of a complete revolution divided by the number of sides (
). That is:
(1)
If we know that , the rotational angle is:
The rotational angle of a regular polygon with 72 sides is 5º.
Use proportions because we know that the triangles are similar.
Cross multiply.
20x=28×5
x=7
answer: 7