nixki333
22.04.2020 •
Mathematics
How many diagonals are in a 30-gon?
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Ответ:
405 diagonals
Step-by-step explanation:
the formula is n(n-3)/2 n being how many sides
30(30-3)/2=30(27)/2=15*27=
405 diagonals
Ответ:
c = b / cos 45.
Step-by-step explanation:
cos 45 = b/c
c * cos 45 = b
c = b / cos 45.