question 3 - 32 views

started by Jyoti Pakianathan on 24 Jan 13

#1 Jyoti Pakianathan on 24 Jan 13

Two men on the same side of a tall building notice the angle of elevation to the top of the building to be 30o and 60o respectively. If the height of the building is known to be h =120 m, find the distance (in meters) between the two men.

<div class="cArrow"> </div><div class="cContentInner">Two men on the same side of a tall building notice the angle of elevation to the top of the building to be 30o and 60o respectively. If the height of the building is known to be h =120 m, find the distance (in meters) between the two men.</div>

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#2 David Kim on 25 Jan 13

tan(60) = 120/x
120/tan(60) = x
x = 69.282

tan(30) = 120/y
120/tan(30) = y
y = 207.846

Distance between the 2 men = 207.846 - 69.282
=138.564m

<div class="cArrow"> </div><div class="cContentInner">tan(60) = 120/x <br /> 120/tan(60) = x <br /> x = 69.282 <br /> <br /> tan(30) = 120/y <br /> 120/tan(30) = y <br /> y = 207.846 <br /> <br /> Distance between the 2 men = 207.846 - 69.282 <br /> =138.564m</div>

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#3 kwonteddy17 on 25 Jan 13

120/tan(30)= 207.846

120/tan(60)= 69.282

207.846 - 69.282 = 138.584M

<div class="cArrow"> </div><div class="cContentInner">120/tan(30)= 207.846 <br /> <br /> 120/tan(60)= 69.282 <br /> <br /> 207.846 - 69.282 = 138.584M</div>

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#5 Elaine Kim on 25 Jan 13

30 degrees
tan 30 = 120/x
120/tan 30 = x
x = 207.846

60 degrees
tan 60 = 120/x
120/tan 60 = x
x = 69. 282

207.846 - 69.282 = 138.564

distance between = 138.564

<div class="cArrow"> </div><div class="cContentInner">30 degrees <br /> tan 30 = 120/x <br /> 120/tan 30 = x <br /> x = 207.846 <br /> <br /> 60 degrees <br /> tan 60 = 120/x <br /> 120/tan 60 = x <br /> x = 69. 282 <br /> <br /> 207.846 - 69.282 = 138.564 <br /> <br /> distance between = 138.564</div>

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#6 Haley Park on 25 Jan 13

tan 30=120/x
120/tan 30= x
x=207.846

tan 60= 120/y
120/tan 60=y
y=69.282

207.846-69.282
=138.563m

<div class="cArrow"> </div><div class="cContentInner">tan 30=120/x <br /> 120/tan 30= x <br /> x=207.846 <br /> <br /> tan 60= 120/y <br /> 120/tan 60=y <br /> y=69.282 <br /> <br /> 207.846-69.282 <br /> =138.563m</div>

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#7 Alex Kim on 25 Jan 13

138.6 because 207.8 - 69.2

<div class="cArrow"> </div><div class="cContentInner">138.6 because 207.8 - 69.2</div>

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#8 backchanyel17 on 25 Jan 13

120/tan(30) - 120/tan(60)= distance between the two men.
138.564m

<div class="cArrow"> </div><div class="cContentInner">120/tan(30) - 120/tan(60)= distance between the two men. <br /> 138.564m</div>

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#9 Sally Rho on 25 Jan 13

Tan60=120/x
x=120/tan60
x=69.282

Tan30=120/y
y=120/tan30
y=207.846

207.846-69.282
=138.546m

<div class="cArrow"> </div><div class="cContentInner">Tan60=120/x <br /> x=120/tan60 <br /> x=69.282 <br /> <br /> Tan30=120/y <br /> y=120/tan30 <br /> y=207.846 <br /> <br /> 207.846-69.282 <br /> =138.546m</div>

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#10 Harine Choi on 25 Jan 13

120 root 30 = 207.8461
120/root 30 = 69.2820
207.8461 - 69.2820 = 138.5641

<div class="cArrow"> </div><div class="cContentInner">120 root 30 = 207.8461 <br /> 120/root 30 = 69.2820 <br /> 207.8461 - 69.2820 = 138.5641</div>

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#11 anonymous on 25 Jan 13

Tan (30) = 120/x
120/Tan(30) = x
x = 207.846

Tan (60) = 120/y
120/Tan(60) = y
y = 69.282

Answer:
=138.564

<div class="cArrow"> </div><div class="cContentInner">Tan (30) = 120/x <br /> 120/Tan(30) = x <br /> x = 207.846 <br /> <br /> Tan (60) = 120/y <br /> 120/Tan(60) = y <br /> y = 69.282 <br /> <br /> Answer: <br /> =138.564</div>

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#12 choandy17 on 25 Jan 13

Tan(30) = 120/y
120/tan(30) = y
207.846

Tan(60) = 120/x
120/tan(60) = x
69.282

=138.564

<div class="cArrow"> </div><div class="cContentInner">Tan(30) = 120/y <br /> 120/tan(30) = y <br /> 207.846 <br /> <br /> Tan(60) = 120/x <br /> 120/tan(60) = x <br /> 69.282 <br /> <br /> =138.564</div>

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#13 Nam Hyun Kim on 25 Jan 13

120/tan(30)= 207.846
120/tan(60) - 69.282
=138.584

<div class="cArrow"> </div><div class="cContentInner">120/tan(30)= 207.846 <br /> 120/tan(60) - 69.282 <br /> =138.584</div>

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#14 trey noh on 25 Jan 13

Tan(30)= 120/y
120/tan(30)=y
207.846
Tan(60)= 120/x
120/ tan (60)=x
29.282
= 138.584

<div class="cArrow"> </div><div class="cContentInner">Tan(30)= 120/y <br /> 120/tan(30)=y <br /> 207.846 <br /> Tan(60)= 120/x <br /> 120/ tan (60)=x <br /> 29.282 <br /> = 138.584</div>

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#15 Janice Min on 25 Jan 13

tan60= 120x
120/tan60=x
x=69.282

tan30=120/y
120/tan30=207.846

207.846-69.282= 138.564

<div class="cArrow"> </div><div class="cContentInner">tan60= 120x <br /> 120/tan60=x <br /> x=69.282 <br /> <br /> tan30=120/y <br /> 120/tan30=207.846 <br /> <br /> 207.846-69.282= 138.564</div>

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#16 jykaka31 on 25 Jan 13

Tan (30) = 120/x
120/Tan(30) = x
x = 207.846

Tan (60) = 120/y
120/Tan(60) = y
y = 69.282
=138.564

<div class="cArrow"> </div><div class="cContentInner">Tan (30) = 120/x <br /> 120/Tan(30) = x <br /> x = 207.846 <br /> <br /> Tan (60) = 120/y <br /> 120/Tan(60) = y <br /> y = 69.282 <br /> =138.564</div>

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#17 Jason Kim on 25 Jan 13

1st
tan30= 120 divided by x
x= 207.85

2nd
tan60= 120 divided by y
y=69.3

answer= 207.85 - 69.3=138.55

<div class="cArrow"> </div><div class="cContentInner">1st <br /> tan30= 120 divided by x <br /> x= 207.85 <br /> <br /> 2nd <br /> tan60= 120 divided by y <br /> y=69.3 <br /> <br /> answer= 207.85 - 69.3=138.55</div>

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#18 jlee200405 on 25 Jan 13

Tan(30)=120/y
y=120/Tan(30)
y=207.846

Tan(60)=120/x
x=120/Tan(30)
x=69.3

207.846-69.3=138.564

The distance between the two men is 138.564 meters.

<div class="cArrow"> </div><div class="cContentInner">Tan(30)=120/y <br /> y=120/Tan(30) <br /> y=207.846 <br /> <br /> Tan(60)=120/x <br /> x=120/Tan(30) <br /> x=69.3 <br /> <br /> 207.846-69.3=138.564 <br /> <br /> The distance between the two men is 138.564 meters.</div>

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#19 Harshit Sharma on 27 Jan 13

Tan 60= 120/y
y= 120/Tan 60
y= 69.282

Tan 30= 120/(69.282+x)
69.282+x= 120/Tan 30
69.282+x= 207.846
x= 138.564

The distance between the two men is 138.564 meters.

<div class="cArrow"> </div><div class="cContentInner">Tan 60= 120/y <br /> y= 120/Tan 60 <br /> y= 69.282 <br /> <br /> Tan 30= 120/(69.282+x) <br /> 69.282+x= 120/Tan 30 <br /> 69.282+x= 207.846 <br /> x= 138.564 <br /> <br /> The distance between the two men is 138.564 meters.</div>

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