To find the distance the plane still needs to fly to reach the ground, we can use some trigonometry. Specifically, we can use the sine function, which relates the angle of depression, the altitude, and the distance traveled along the plane's path.
In this case:
- The angle of depression (θ) is 12°.
- The altitude (h) is 1000 feet.
We can represent the situation using a right triangle where:
- The altitude (h) is the opposite side,
- The distance the plane still needs to travel (d) is the hypotenuse,
- The angle of depression (θ) is the angle between the hypotenuse and the horizontal line.
Using the sine function: \[ \sin(θ) = \frac{\text{opposite}}{\text{hypotenuse}} = \frac{h}{d} \]
Rearranging this gives: \[ d = \frac{h}{\sin(θ)} \]
Substituting the values we have: \[ d = \frac{1000 \text{ feet}}{\sin(12°)} \]
Now, calculate \(\sin(12°)\): \(\sin(12°) \approx 0.2079\)
Now plug this value into the equation: \[ d = \frac{1000}{0.2079} \approx 4814.73 \text{ feet} \]
Thus, the distance the plane still needs to fly to reach the ground is approximately 4814.73 feet when rounded to the nearest hundredth.