kaitlyn114433
20.11.2019 •
Mathematics
A98ft extension ladder rests the top of a hook and ladder truck with its base 11 from the ground. the angle of elevation 73 degrees. how high up on the building is the ladder?
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Ответ:
∴ The height of the end of the ladder is
Step-by-step explanation:
Given,
The length feet and which is touch feet from the base and the angle of elevation degrees.
From the figure ;
feet , and degree
Now from figure we have,
Plug value in above equation,
( from figure )
Then,
Then the height of the end of the ladder is
Ответ: