L 0 We wish to find the length of the shortest ladder that will reach from the ground over the fence to the wall of the building 15 5 sin 0 cos 0 B Now find the derivative L 0 Type theta for 0 L 0 0 A First find a formula for the length of the ladder in terms of 0 Hint split the ladder into 2 parts Type theta for 0 LADDER 15 ft 15 csc 0 cot 0 5 sec 0 tan 0 feet 5 ft C Once you find the value of that makes L 0 0 substitute that into your original function to find the length of the shortest ladder Give your answer accurate to 5 decimal places L 0min