Q.1] The angle Elevation Of the top Of the tower at a point on the ground is 30 degree. On Walking 24 metres towards the tower, the angle of elevation become 60 degree. Find the height of the the tower. प्रश्न 1] जमीनीवरून टॉवरच्या टोकाकडे पाहिले असता होणारा उन्नत कोन 30 ◦ मापाचा आहे ,जर टॉवरच्या दिशेने 24 मीटर चालले तर उन्नत कोन 60 ◦ मापाचा होतो तर टॉवरची उंची काढा. (√3 = 1.73)
a)2.076 m
b)20.76 m
c)2 m
d) None of these
Answers
Answered by
2
Answer:
10th
Maths
Some Applications of Trigonometry
Heights and Distances
The angle of elevation of t...
MATHS
The angle of elevation of the top of a tower at a point on the ground is 30
0
On walking 24 m towards the tower, the angle of elevation becomes 60
0
Find the height of the tower
MEDIUM
Share
Study later
ANSWER
Let AB be the tower and C and D be the points of observation Then
AD
AB
=tan60
0
=
3
⇒AD=
3
AB
=
3
h
AC
AB
=tan30
0
=
3
1
⇒AC=AB×
3
=h
3
CD=(AC−AD)=(h
3
−
3
h
)
∴h
3
−
3
h
=24⇒h=12
3
=(12×1.73)
=20.76m
Hence the height of the tower is 20.76 m
Step-by-step explanation:
so option B is correct
Attachments:
Answered by
1
Answer:
The answer is a option C
Similar questions