Question

A ladder, leaning against a wall, makes an angle of 60° with the horizontal. If the foot of the ladder is 3 m away from the wall, find the length of the ladder.​

Answer 1

Answer:

Step-by-step explanation: Let the length of the ladder be=15m(H)

The angle between the ladder and the wall ∠BCA=60  

 Angle between ladder and the ground ∠CAB=90  ∘ −60  ∘  =30  ∘

 Height of the wall =BC sin30  ∘ =  15 BC

​⇒  2 1 =  15 BC

​⇒BC=  2 15

​ =7.5m