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First solution in Clear category for The Angles of a Triangle by Ziemowit_Soko_owski
from math import acos, degrees
def checkio(a, b, c):
if (a+b) <= c:
return [0, 0, 0]
elif (a+c) <= b:
return [0, 0, 0]
elif (c+b) <= a:
return [0, 0, 0]
else:
return sorted([round(degrees(acos((a*a + b*b - c*c)/float(2*a*b)))),
round(degrees(acos((b*b + c*c - a*a)/float(2*b*c)))),
round(degrees(acos((c*c + a*a - b*b)/float(2*c*a))))])
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio(4, 4, 4) == [60, 60, 60], "All sides are equal"
assert checkio(3, 4, 5) == [37, 53, 90], "Egyptian triangle"
assert checkio(2, 2, 5) == [0, 0, 0], "It's can not be a triangle"
Dec. 13, 2016