A ladder of length 30 m is leaning against a wall making an angle of 30° with the horizontal. Find the distance between the foot of the ladder and the wall.
Answer & explanation
Correct answer: option 2
We have,
The length of the ladder = 30
Angle = 30°
We know that,
If the angle is 30° then the base : perpendicular : hypotenuse = \(\sqrt {3}\) : 1 : 2
So we have length or hypotenuse of the ladder = 30
2 = 30
1 = 15
then \(\sqrt {3}\) = 15\(\sqrt {3}\)