Hi,

find the angle made by a ladder of length 4m with the ground 

if its one end is 2m away from the wall and the other end is on the wall



 cos θ = adj/hyp = 2m/4m = 1/2  ,  θ = 60° 



θ	radians	sin θ	cos θ	tan θ

0°	0	0	1	0

30°	π/6	1/2	√3/2	√3/3

45°	π/4	√2/2	√2/2	1

60°	π/3	√3/2	1/2	√3

90°	π/2	1	0	─

 

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