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Roman55 [17]
2 years ago
6

How tall is a building that casts a ​78-ft shadow when the angle of elevation of the sun is 30 degrees​?

Mathematics
1 answer:
Marta_Voda [28]2 years ago
8 0

Answer: 45.03\ ft

Step-by-step explanation:

Given

The length of the shadow is 78 ft

the angle of elevation is \theta =30^{\circ}

Suppose the height of the building is h

From the figure, we can write

\tan 30^{\circ}=\dfrac{h}{78}\\\\h=78\tan 30^{\circ}\\\\h=45.03\ ft

The height of the building is 45.03 ft

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telo118 [61]

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The last one is yours

6 0
2 years ago
Kelly has some apples, bananas and oranges. The ratio of the number of apples to the total number of fruits us 1:4. There are 30
madreJ [45]
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3 years ago
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Read 2 more answers
What is 321.5 Kilometers per hour converted to MPH
inessss [21]
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By the way, Google has a built in calculator. You can just type in "321.5 kmph in mph" and it will come up with this answer.

You could also use the fact that 1\ km\approx0.621371\ mi,
According to the properties of equality, if you have two equal expressions and you change them in the same way, the results wil also be equal.
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3 years ago
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Here you go

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