1.
sequence = [1.0, 3.1, 2.5, -1.0, 0.5]
i = 0
while i < len(sequence) and sequence[i] > 0:
i = i + 1
print(i)
2.
from math import cos, pi
sequence = [pi/2, pi/4, pi, 2*pi]
min_number = min(sequence)
min_number_cos = cos(min_number)
print(min_number_cos)
