Question

a ladder is placed against a wall of height 18m if the top of the ladder makes an angle 60 with the wall then find the length of the ladder

Answer 1

Answer:

36

Step-by-step explanation:

if you make the fig. it will be right triangle

the angle b/w wall and ladder is 60⁰ as given

now perpendicular is opposite side of given angle

now we know that

cosø = base/hypotenuse

hence cos60 = 18/x

1/2 = 18/x

hence x = 36