A ladder of length 6 m leans against a vertical wall so that the base of ladder is 2m from the wall. calculate the angle between the ladder and the wall.

Answer 1

Did you make a sketch?
If so, you can see that
cosØ = 2/6 = 1/3
Ø = cos^-1 (1/3) = appr 70.5°

Answer 2

If you want the angle between the wall and ladder it will be:

Sine inverse multiplied to 2 divided by 6

Answer is : 19.47122063
19.5 degree(rounded up)

Answer 3

19.5

Answer 4

70.5