A ladder 7m long stands on level ground and makes a 73 degree angle with the ground as it rests against a wall. How far from the wall is the base of the ladder?
A ladder 7m long stands on level ground and makes a 73 degree angle with the ground as it rests against a wall. How far from the wall is the base of the ladder?
w = distance to wall l = 7m alpha = 73deg cos( alpha ) = w/l w = cos( alpha ) * l [input]cos( 73 ) * 7m[/input]
+3144 
