. A bird is flying at the height of 1,200 m
above the sea level. At a certain point, it
is exactly above a whale swimming 800 m
below the sea level. What is the vertical
distance between them?
Answers
Answered by
1
Answer:
the vertical difference between them is 1,200+800=2,000m
Answered by
2
Hi bud, here's ur answer!
_______________________________
△ABC is an equilateral triangle
AB=BC=CA=9cm
O is the circumcentre of △ABC
∴OD id the perpendicular of the side BC
In △OBD and △ODC
OB=OC (Radius of the circle)
BD=DC (D is the mid point of BC)
OD=OD (common)= 2× 60°
= 120°
OD bisects BC perpendicularly.
In ∆BOC ,
<OBD = 30° ,
BD = BC/2 = 9/2 cm
\begin{lgathered}cos 30\degree = \frac{BD}{OB}\\=\frac{\frac{9}{2}}{r}\end{lgathered}
cos30°=OB/BD
= 33
_________________________________
Do mark as brainlist!
Similar questions