A student stands at point A and measures the angle of elevation to the top of a building at 30°. She then walks straight toward the building to point B where the angle of elevation to the top of the building is 45°. If the distance she walks is 100 ft, what is the height of the building?
Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
A student stands at point A and measures the angle of elevation to the top of a building at 30°. She then walks straight toward the building to point B where the angle of elevation to the top of the building is 45°. If the distance she walks is 100 ft, what is the height of the building?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
