Python for the Nspire: Powerful Python programs and games for the TI-Nspire (tm) CX II technology calculator by Craig John Clark

Author:Craig, John Clark [Craig, John Clark]
Language: eng
Format: epub, pdf
Publisher: Books To Believe In
Published: 2021-08-22T00:00:00+00:00

from math import *

def nav(pt1,pt2):

la1=radians(pt1[0])

lo1=radians(pt1[1])

la2=radians(pt2[0])

lo2=radians(pt2[1])

r=6371

t1=sin(la1)*sin(la2)

t2=cos(la1)*cos(la2)*cos(lo2-lo1)

km=acos(t1+t2)*r

t1=cos(la1)*sin(la2)

t2=sin(la1)*cos(la2)*cos(lo2-lo1)

x=t1-t2

y=sin(lo2-lo1)*cos(la2)

b=degrees(atan2(y,x))

return [b,km]

# Dulce, NM

pt1=(36.9336,-106.9989)

# Taos, NM

pt2=(36.4072,-105.5731)

# Distance and bearing

b,km=nav(pt1,pt2)

print("pt1: ",pt1)

print("pt2: ",pt2)

print("km: ",km)

print("miles: ",km*.621371)

print("bearing: ",b)

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