Correct option is B
Given:
tanθ=815
Height of the top of the ladder from the wall = 30 m
Formula Used:
tanθ=distance from the wallheight of the ladder
Solution:
Given tanθ=815 and height = 30 m, we can write:
815=distance from the wall30
Let the distance from the wall be x. Then:
815=x30
15x=8×30
15x = 240
x = 15240=16 m
Thus, the distance of the foot of the ladder from the wall is 16 m.