Question

A ladder make an angle of 30 degree with the wall. if the foot of the ladder is 5 m away from the wall, find the length of the ladder

Answer 1

This situation makes a right angle triangle.

where perpendicular is 5 m and ledder will be hypotenuse of the triangle. $let \: the \: length \: of \: the \: ladder = l$
$therefore \: \sin(30) = \frac{5}{l}$
$\frac{ 1}{2} = \frac{5}{l}$
$l = \frac{5 \times 2}{ 1 }$

Therefore l = 10 m

Answer 2

Answer:10 m

Step-by-step explanation:

Length of ladder is equals to cos30=distance of ladder from the wall/ height of ladder

Cos30=5/h

H=10m