If a 30 m ladder is placed against a 15 m wall such that it just reaches the top of the wall, then the elevation of the wall is equal to-

If a 30 m ladder is placed against a 15 m wall such that it just reach

1.	If a 30 m ladder is placed against a 15 m wall such that it just reaches the top of the wall, then the elevation of the wall is equal to-
A.	5°
B.	0°
C.	0°
D.	0°
Answer» C. 0°