Nalyntotid
Answered

the window of house is 15 m above the grounde.how long must a ladder be in order to reach the window if the angle of elevation is 60?

Sagot :

sin θ = opposite / hypotenuse

Let x be the length of the ladder (hypotenuse)
Angle of elevation = 60°
Distance of the window from the ground (height) = 15 m

sin 60° = 15 / x
x = 15 / sin 60°
x = 15 / 0.866
x = 17.32  

ANSWER: The ladder must be 17.32 or 17 m.