Page 4: Solutions for Problems 4 and 5
This page provides solutions for Problems 4 and 5, demonstrating advanced applications of trigonometry.
Problem 4 Solution:
To find the distance between the endpoints of two paths that diverge at a 98° angle with lengths 4.1km and 5.8km, the law of cosines is applied:
d² = 4.1² + 5.8² - 2(4.1)(5.8)cos(98°)
The result shows the endpoints are approximately 7.56km apart.
Problem 5 Solution:
This problem involves calculating a mountain's height using two elevation angles α=30.11°andβ=35.25° measured from the ends of a 200m baseline.
The solution uses trigonometric ratios and the law of sines to determine:
- The distance from point A to the mountain's base (1288.42m)
- The mountain's height (646.38m)
Highlight: These problems exemplify real-world applications of trigonometry, aligning with Anwendungsaufgaben Trigonometrie.