The angle of elevation of the top of a tower from the foot of the building is 30 degree and the angle of elevation of the top of the building from the foot of the tower is 60 degree. what is the ratio of heights of tower and building.
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HEY,,,
HERE IS YOUR ANSWER.==>>
Suppose,
AB = Height of tower (h1)
CD = Height of building (h2)
BC = distance between tower and building (x)
_______________________
In ∆ ABC,
Tan 30 = AB/ BC
1/√3 = h1/x
x = √3 (h1) .....(1)
______________________
In ∆ BCD ,
Tan 60 = CD/BC
√3 = h2 / x
x = h2/√3. ......(2)
_______________________
COMPARE EQ. (1) AND EQ. (2),
√3h1 = h2/√3
3h1 = h2
h1/h2 = 1/3
So,
Ratio of height of tower and Height of building is 1:3.
HOPE IT HELPS.....
THANKS...
HERE IS YOUR ANSWER.==>>
Suppose,
AB = Height of tower (h1)
CD = Height of building (h2)
BC = distance between tower and building (x)
_______________________
In ∆ ABC,
Tan 30 = AB/ BC
1/√3 = h1/x
x = √3 (h1) .....(1)
______________________
In ∆ BCD ,
Tan 60 = CD/BC
√3 = h2 / x
x = h2/√3. ......(2)
_______________________
COMPARE EQ. (1) AND EQ. (2),
√3h1 = h2/√3
3h1 = h2
h1/h2 = 1/3
So,
Ratio of height of tower and Height of building is 1:3.
HOPE IT HELPS.....
THANKS...
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