75.0k views
1 vote
A 15 foot ladder makes a 52 degree angle with the

ground. How far will the top of the ladder be above the
ground?

User Pylander
by
3.8k points

1 Answer

6 votes

Answer:

11.820 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that ...

Sin = Opposite/Hypotenuse

The length of the ladder is the hypotenuse of a right triangle with 52° as the base angle. The side opposite is the height up the building where the top of the ladder rests. So, you have the relation ...

sin(52°) = height/(15 ft)

Multiplying by the denominator gives you ...

height = (15 ft)·sin(52°) ≈ 11.820 ft

Hope this helps

User Brian Crist
by
4.1k points