A ladder is placed against a vertical tower.If the ladder makes an angle of 30 with the wall and reaches upto a height of 15m of the tower.find the length of ladder.read carefully,the ladder makes an angle of 30 with the wall and not the ground.
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Answer:
⇒ Here, AB is the length of ladder.
⇒ ∠ABC=30
o
and AC=15m
⇒ sin30
o
=
AB
AC
⇒
2
1
=
AB
15
∴ AB=15×2
∴ AB=30m
∴ Length of the ladder is 30m
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