a man takes a step forward with probability .04 and backwards with a probability .06 . find the probability that at the end of 11 steps he is 1 step away from the initial point .
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?
How far from the wall is the base of the ladder?