The angle between the ground at the top of a flag pole is 25o when the observer is at point A. The observer walks 10 m directly
towards the flag pole to point B and the angle is now 40o. What is the height of the flag pole assume the observers eyes are 2 m above the ground?
1 answer:
Answer:
12.4967 m
≈ 12.5 m
Step-by-step explanation:
From the solution diagram attached, to find /AB/, we apply sine rule:
AB/Sin 140° =AD/Sin 15°
AB = 10/Sin 15° x Sin 140°
= 24.8372 m
To calculate the height of the pole we will calculate BC first. Using the right angle triangle ∠ABC, we have:
Sin ∅ = BC/AB
Sin 25° = BC/ 24.8372
BC = 24.8372 Sin 25°
= 10.4967 m
The height of the pole = BC + 2.0
= 10.4967 + 2.0
= 12.4967
≈ 12.5 m
You might be interested in
Answer:
16. C 17.A 18.D 19.c
hope this helps
Answer:
D. 180 degrees
Step-by-step explanation:
A straight line is 180 degrees.
Answer:
It's simple
Step-by-step explanation:
See what I did there? Simple?
Answer:
8
Step-by-step explanation:
the mode is the number that shows up in the data the most times
Step-by-step explanation:
it's false,
it should be a point