A tree is 15 meters tall. From a point 20 meters away from the base of the tree,
Practice Questions
Q1
A tree is 15 meters tall. From a point 20 meters away from the base of the tree, what is the angle of elevation to the top of the tree?
36.87 degrees
45 degrees
53.13 degrees
60 degrees
Questions & Step-by-Step Solutions
A tree is 15 meters tall. From a point 20 meters away from the base of the tree, what is the angle of elevation to the top of the tree?
Step 1: Identify the height of the tree, which is 15 meters.
Step 2: Identify the distance from the point to the base of the tree, which is 20 meters.
Step 3: Understand that the angle of elevation (θ) can be found using the tangent function, which relates the height of the tree to the distance from the tree.
Step 4: Use the formula for tangent: tan(θ) = height/distance.
Step 5: Substitute the values into the formula: tan(θ) = 15/20.
Step 6: Simplify the fraction: 15/20 = 0.75.
Step 7: To find the angle θ, use the inverse tangent function: θ = tan⁻¹(0.75).
Step 8: Calculate θ using a calculator: θ ≈ 36.87 degrees.
Trigonometry – The problem involves using the tangent function to find the angle of elevation based on the height of the tree and the distance from the observer.
Right Triangle Properties – Understanding the relationship between the sides of a right triangle and the angles formed, specifically in the context of elevation.