Algebra-2

Question Analysis
This problem applies the sine function to a real-world scenario involving a ladder.

Key Concept Explanation
The sine of an angle in a right triangle is the ratio of the length of the opposite side to the hypotenuse. In this context, the height the ladder reaches on the wall is the opposite side.

Step-by-step Solution
1. Identify the given information: Angle = , Hypotenuse = 20 meters.
2. Use the sine function: .
3. Calculate the height: , so

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