Solve the following word problems. For each question, draw a diagram to help you. 31) An airplane is flying at an altitude of 6000 m over the ocean directly toward a coastline. At a certain time, the angle of depression to the coastline from the airplane is 14°. How much farther (to the nearest kilometer) does the airplane have to fly before it is directly above the coastline?

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Chapter1: Functions And Models
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### Solve the following word problems. For each question, draw a diagram to help you.

**31) An airplane is flying at an altitude of 6000 m over the ocean directly toward a coastline. At a certain time, the angle of depression to the coastline from the airplane is 14°. How much farther (to the nearest kilometer) does the airplane have to fly before it is directly above the coastline?**

**32) From a horizontal distance of 80.0 m, the angle of elevation to the top of a flagpole is 18°. Calculate the height of the flagpole to the nearest tenth of a metre.**

**33) A 9.0 m ladder rests against the side of a wall. The bottom of the ladder is 1.5 m from the base of the wall. Determine the measure of the angle between the ladder and the ground, to the nearest degree.**

**34) The angle of elevation of the sun is 68° when a tree casts a shadow 14.3 m long. How tall is the tree, to the nearest tenth of a metre?**

**35) A wheelchair ramp is 4.2 m long. It rises 0.7 m. What is its angle of inclination to the nearest degree?**

---

#### Additional Problems (with Diagrams)

**On a windy day, a 90 foot rope tightly secures a hot air balloon to a stake in the ground. From the balloon, the angle of depression of the stake is 62°. Find the height of the balloon, assuming the wind to be constant.**

- **Diagram Explanation:**
  - The diagram illustrates a right triangle where the rope serves as the hypotenuse of the triangle.
  - The angle of depression of 62° is marked.
  - The height of the balloon is the vertical leg of the triangle.

**From the top of a 108 foot lighthouse, the angle of depression of a boat at sea is 27°. Find the horizontal distance from the boat to the base of the lighthouse.**

- **Diagram Explanation:**
  - The diagram depicts the lighthouse as the vertical leg of a right triangle.
  - The horizontal distance from the boat to the lighthouse is the base of the triangle.
  - The angle of depression from the top of the lighthouse to the boat is marked as 27°.

### Tips for Solving:
- For questions involving angles and distances, use trigonometric ratios (
Transcribed Image Text:### Solve the following word problems. For each question, draw a diagram to help you. **31) An airplane is flying at an altitude of 6000 m over the ocean directly toward a coastline. At a certain time, the angle of depression to the coastline from the airplane is 14°. How much farther (to the nearest kilometer) does the airplane have to fly before it is directly above the coastline?** **32) From a horizontal distance of 80.0 m, the angle of elevation to the top of a flagpole is 18°. Calculate the height of the flagpole to the nearest tenth of a metre.** **33) A 9.0 m ladder rests against the side of a wall. The bottom of the ladder is 1.5 m from the base of the wall. Determine the measure of the angle between the ladder and the ground, to the nearest degree.** **34) The angle of elevation of the sun is 68° when a tree casts a shadow 14.3 m long. How tall is the tree, to the nearest tenth of a metre?** **35) A wheelchair ramp is 4.2 m long. It rises 0.7 m. What is its angle of inclination to the nearest degree?** --- #### Additional Problems (with Diagrams) **On a windy day, a 90 foot rope tightly secures a hot air balloon to a stake in the ground. From the balloon, the angle of depression of the stake is 62°. Find the height of the balloon, assuming the wind to be constant.** - **Diagram Explanation:** - The diagram illustrates a right triangle where the rope serves as the hypotenuse of the triangle. - The angle of depression of 62° is marked. - The height of the balloon is the vertical leg of the triangle. **From the top of a 108 foot lighthouse, the angle of depression of a boat at sea is 27°. Find the horizontal distance from the boat to the base of the lighthouse.** - **Diagram Explanation:** - The diagram depicts the lighthouse as the vertical leg of a right triangle. - The horizontal distance from the boat to the lighthouse is the base of the triangle. - The angle of depression from the top of the lighthouse to the boat is marked as 27°. ### Tips for Solving: - For questions involving angles and distances, use trigonometric ratios (
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