A ladder of length 15cm placed against a wall with an inclination 30degrees fine the height of wall
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Answer:
Answer is 7.5m
Step-by-step explanation:
Let the length of the ladder be =15m(hypotenuse)
The angle between the ladder and the wall ∠BCA=60°
Angle between ladder and the ground ∠CAB=90°
90° − 60°
=30°
Height of the wall =BC
sin30
∘
=
15
BC
⇒
2
1
=
15
BB
⇒BC=
2
15
=7.5m
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