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finlep [7]
2 years ago
13

An engineer stands 30 ft. from a building and notes a 55 degree angle of elevation to the top of the building. How high is the b

uilding? Round your answer to 1 decimal place.
Mathematics
1 answer:
alexdok [17]2 years ago
8 0
<h3>Answer:  42.8 feet</h3>

Work Shown:

h = height of the building

h is opposite the reference angle (55)

the adjacent side is 30 feet

tan(angle) = opposite/adjacent

tan(55) = h/30

h = 30*tan(55)

h = 42.84444 which is approximate

h = 42.8 feet

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3 years ago
At the beginning of a​ walk, roberto and juanita are 7.77.7 miles apart. if they leave at the same time and walk in the same​ di
dem82 [27]
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_____
In a "sum and diference" problem, one solution is half the total of the sum and difference. If we let R and J be the respective speeds of Roberto and Juanita, we have
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4 0
3 years ago
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5 0
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hodyreva [135]
To find the answer,we can set up two equations:

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Put (1) into (2):

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Put the above answer into (1):

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Hope it helps!
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solniwko [45]
45°. Also, it’s not zero, that’s just the sign for theta :))
8 0
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