On a sunny day, Ayush observed that a 2 m long stick standing vertically on the ground makes a shadow of length 60 cm. What will be the height of the tree if the length of its shadow is 7 m 20 cm at that time?
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ANSWER:☝️
Step-by-step explanation:
In ΔABC & ΔADE
∠BCA=∠DEA=90
o
[Each are at 90
o
to the ground]
∠BAC=∠DAE [common angle]
∠CBA=∠EDA [∵ the sum will cast light a equal angles]
Hence, by AAA, ΔABC∼ΔADE
⇒
CA
BC
=
EA
DE
⇒
10
20
=
50
DE
⇒DE=100
∴ The height of the tower is 100m.
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100m is your ans mark me as brainlist
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