Question

a ladder 20m long touches a wall at the height of 10 m find the angel made by the ladder with the horizontal

Answer 1

Hi friend
ATQ , perpendicular /hypotenuse= 10/20
i.e sinθ = 10/ 20
     sinθ= 1/2
 so, sin 30°= 1/2
required angle = 30°
__________________________________________________Thanks :)_____

Answer 2

ATQ , perpendicular /hypotenuse= 10/20
i.e sinθ = 10/ 20
     sinθ= 1/2
 so, sin 30°= 1/2
required angle = 30°