Step-by-step explanation:
From the astronaut to the horizon is a tangent line to the curvature of the earth. And from that point on the horizon to the center of the earth is at a right angle to the tangent and is equal to the radius of the earth...so we can say
cosα=r/(r+h) where r is the radius of the earth and h is the height above the surface of the earth...
α=arccos(r/(r+h))
now tanα=d/r where d is the distance from the astronaut to the point on the horizon so:
tan(arccos(r/(r+h))=d/r
d=rtan(arccos(r/(r+h))) and using r≈4000 and h=50 we get:
d=4000tan(arccos(4000/(4050)))
d≈634.42mi
d≈634 mi (to nearest mile)
63.27 % of fishes are gold fish
<h3><u>Solution:</u></h3>
Given that out of 49 fish, 31 are goldfish
To find: percent of gold fish
The percent of gold fish is calculated by dividing number of goldfish by total number of fish multiplied by 100
<em><u>The percentage of gold fish is given by formula:</u></em>
From given information,
total number of fish = 49
number of gold fish = 31
Substituting the values in formula, we get
Therefore, approximately 63.27 % of fishes are goldfish
Answer:
option A
Step-by-step explanation:
All the three angles are equal..
so it's AA similarity
