math
posted by Anonymous .
A 13foot ladder is placed against a wall. If the ladder cannot be placed at a slope less than 2.4, what is the minimum height of the wall?
A.5 feet
B.12 feet
C.20 feet
D.13 feet
E.8 feet

The 13foot ladder is the hyp. of a rt
triangle.
tanA = m = 2.4,
A = 67.38 deg.
h = 13*sin67.38 = 12 Ft.