Terrence is fishing from a small boat. A fish swimming at the same depth as the hook at the end of his fishing line is 9 meters away from the hook. If Terrence is 10 meters away from the fish, how far below Terrence is the hook? If necessary, round to the nearest tenth.
Question
Terrence is fishing from a small boat. A fish swimming at the same depth as the hook at the end of his fishing line is 9 meters away from the hook. If Terrence is 10 meters away from the fish, how far below Terrence is the hook? If necessary, round to the nearest tenth.
Solution
This problem can be solved using the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
Here, we can consider the distance between Terrence and the fish as the hypotenuse, the distance between the fish and the hook as one side of the triangle, and the depth of the hook as the other side of the triangle.
Given:
- Hypotenuse (Terrence to fish) = 10 meters
- One side (fish to hook) = 9 meters
We need to find the other side (Terrence to hook = depth of the hook).
According to the Pythagorean theorem:
(depth of the hook)² = (Terrence to fish)² - (fish to hook)²
Let's plug in the given values:
(depth of the hook)² = 10² - 9² (depth of the hook)² = 100 - 81 (depth of the hook)² = 19
Now, we find the square root of 19 to get the depth of the hook:
depth of the hook = √19 ≈ 4.36 meters
So, the hook is approximately 4.4 meters below Terrence, if we round to the nearest tenth.
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