In [2]:

    

import math


    

In [3]:

    

R=6371


    

In [4]:

    

anu_location=[-35.2802179,149.1114782]


    

In [5]:

    

home_location=[-35.1598966, 149.1033091]


    

In [10]:

    

def cal_distance(loc1,loc2):
    lat1=loc1[0]*math.pi/180
    lat2=loc2[0]*math.pi/180
    log1=loc1[1]*math.pi/180
    log2=loc2[1]*math.pi/180
    #sin(MLatA)*sin(MLatB)*cos(MLonA-MLonB) + cos(MLatA)*cos(MLatB)
    C=math.sin(lat1)*math.sin(lat2)*math.cos(log1-log2)+math.cos(lat1)*math.cos(lat2)
    d=6371*math.acos(C)
    return d


    

In [11]:

    

d=cal_distance(anu_location,home_location)
d


    

    
Out[11]:





13.38937041780438

In [8]:

    

help(math.asin)


    

    




Help on built-in function asin in module math:

asin(...)
    asin(x)
    
    Return the arc sine (measured in radians) of x.

In [9]:

    

math.sin(3.1415/6)


    

    
Out[9]:





0.49998662654663256

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