Lecture 5

Question 1

Spherical Coordinates are most often recorded in _____but also expressed in _____

Answer 1

Degrees - Minutes - Seconds
Decimal Degrees

Question 2

DD to DMS

Answer 2

Keep whole number and times by 60 twice record numbers after each multiplication

Question 3

DMS to DS

Answer 3

Degree + Minutes/60 + Seconds/3600

Question 4

Earth’s Shape is

Answer 4

considered an ellipsoid instead of a sphere

Question 5

Arc to Surface distance

Answer 5

d = r * angle
d = is approximate ground distance
r= is the radius of the circle or sphere
angle = the angle of the arc

Question 6

Radians = Degree * ( pi/180)

Answer 6

1 radian = 57.2958 degrees

Question 7

Great Circle

Answer 7

is any circle that divides the earth into a circumference of two equal halves. (Equator and all Meridians)

Question 8

Small Circles

Answer 8

are circles that cut the earth, but not into equal halves, and do not pass through the center of the earth. All Parallels other than the Equator

Question 9

Great circle distance formular

Answer 9

d = r*2 (sin^-1(sqrt(sin^2((latB-latA)/2)+cos(latA) * cos(latB) * sin^2((longB-LongA)/2)))