Problema Solution
A wooden beam 24 feet long leans against a wall and makes an angle of 71 degrees with the ground. How high up the wall does the beam reach?
Answer provided by our tutors
the beam, the wall and the ground make a right triangle with hypotenuse c = 24 ft and angle B = 71 degrees (make a drawing)
the height h = c*sin(angle B)
h = 24*sin(71)
h = 22.69 ft
click here to see the step by step calculation
the beam reaches 22.69 ft up the wall.