Algebra-2

Question Analysis
This problem assesses the application of trigonometric functions in a real-world context.

Key Concept Explanation
The height reached by the ladder can be found using the sine function, where the height is the opposite side and the ladder's length is the hypotenuse. Mathematically, .

Step-by-step Solution
1. Identify the given values: Ladder length (hypotenuse) = 20 meters, Angle = .
2. Use the sine function:

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