Question

A ladder 15 m long just reaches the top of a vertical wall. If the ladder makes an angle of 60° with the wall, then calculate the height of the wall. 
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Answer 1

Answer:

7.5 m

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∘

−60∘=30°

Height of the wall =BC

sin30∘= 15/BC

2/1= 15/BC

BC= 2/15

=7.5m

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Answer 2

Step-by-step explanation:

It's solved!

I hope it's help you.

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