Final answer:
The ladder reaches a height of approximately 4.14 feet, has a 15-degree angle to the ground, and reaches a height of 4.1 feet when rounded to the nearest tenth.
Step-by-step explanation:
Given that the ladder is 16 feet long and placed at a 15-degree angle to the ground, we can find the height the ladder reaches using trigonometry.
Using the sine function, we can calculate the height as follows: Height = Ladder length * sin(angle)
Height = 16 ft * sin(15 degrees)
Calculating this, the ladder reaches a height of approximately 4.14 feet.
The ladder's angle to the ground remains 15 degrees.
When rounded to the nearest tenth, the ladder reaches a height of 4.1 feet.
Therefore, the ladder's length is 16 feet.