Question

A ladder of 10cm touches the wall at height of 5cm the o made by it with horizontal is______

Answer 1

Answer:

AC is the ladder and AB is the wall in right angle triangle ABC.

Let θ is the angle made by the ladder from the horizontal.

Now, from triangle ABC,

sin θ = AB/AC

=> sin θ = 5/10

=> sin θ = 1/2

=> sin θ = sin 30°

=> θ = 30°

So, the angle made by the ladder from the horizontal is 30°