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Stels [109]
3 years ago
6

(Two office buildings are 51 m apart. The height of the taller building is 207 m. The angle of depression from the top of the ta

ller building to the top of the shorter building is 15 degrees. Find the height of the shorter building to the nearest meter. )
QUESTION
In the previous problem how does the angle of depression from the top of the taller building relate to the angle of elevation from the top of the shorter building. (You can pick more than once choice)

A:They are congruent
B:They are complementary
C:They are supplementary
D:They are alternate interior angles
E:They are alternate exterior angles
F:They are corresponding angles.

Mathematics
1 answer:
Sholpan [36]3 years ago
7 0
See the attached figure to better understand the problem

we know that

in the triangle ABC
tan 15=AC/BC--------> AC=BC*tan 15
BC=51 m
AC=51*tan 15------> AC=13.67 m

t<span>he height of the shorter building=207-AC----> 207-13.67----> 193.33 m
</span>the height of the shorter building=193 m
<span>
the answer Part a) is
</span>the height of the shorter building is 193 m
<span>
Part b) </span><span>how does the angle of depression from the top of the taller building relate to the angle of elevation from the top of the shorter building
</span>
we know that

the angle of depression is equals to the angle of elevation
so

the answers are
<span>A:They are congruent
</span><span>D:They are alternate interior angles</span>

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Answer:37.2 sec

Step-by-step explanation:

Given

Joel takes 81 sec for 14 mile long track

speed of joel \frac{14}{1.35} mi/min=10.37 mi/min

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so jason speed is \frac{14}{1.15} mi/min=12.17 mi/min

if both starts from same spot in opposite direction then

\frac{x}{10.37}=\frac{14-x}{12.17}

where x is distance covered by Joel

then x=6.44 miles

therefore time required

t=\frac{6.44}{10.37}=0.621 min\approx 37.2 sec

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What is the volume of a right circular cone if the circumference of the base is 125.6 ft and the height is 75 ft.? Use π=3.14 an
Alex_Xolod [135]

Answer:

The volume of a right circular cone is 31400\ \text{feet}^3.

Step-by-step explanation:

The circumference of the base of a right circular cone is 125.6 ft.

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Circumference of base is :

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The volume of a cone is given by :

V=\dfrac{1}{3}\pi r^2 h\\\\V=\dfrac{1}{3}\times 3.14\times (20)^2\times 75\\\\V=31400\ \text{feet}^3

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Is (2, 5) a solution to this system of inequalities?<br><br> 4x + 2y &gt; 18<br> 13x + y ≤ 7
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Step-by-step explanation:

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timama [110]

Answer:

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Step-by-step explanation:

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  5. It went down, so it is a decrease

I hope this helps!

7 0
3 years ago
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