Subjects trigonometry

Awning Length 781B01

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1. **State the problem:** The user is confused because the calculated length of the awning $x \approx 18.67$ feet seems longer than the height of the wall $12$ feet, but the picture shows the awning shorter than the height. 2. **Explain the geometry:** The awning is attached at the top of the wall and extends outward at an angle of $50^\circ$ from the vertical wall. This means the awning is slanting outward, not straight down. 3. **Recall the triangle sides:** The height $y=12$ feet is the vertical side adjacent to the angle $50^\circ$, and the awning $x$ is the hypotenuse of the right triangle formed. 4. **Why is $x$ longer than $y$?** In a right triangle, the hypotenuse is always the longest side. Since the awning is the hypotenuse, it must be longer than the vertical height $12$ feet. 5. **Visual perception:** The picture might show the awning shorter because of perspective or scale, but mathematically, the awning length $x$ must be longer than the height $y$ due to the angle and triangle properties. 6. **Summary:** The awning length $x$ is longer than the height $12$ feet because it is the hypotenuse of a right triangle with one leg $12$ feet and an angle of $50^\circ$ from vertical. **Final note:** The calculation $x = \frac{12}{\cos(50^\circ)} \approx 18.67$ feet is correct and consistent with the geometry.