B. Since a square is a rectangle and a rectangle is a polygon, that makes a square a polygon.
Answer:
4.
A = arcsin(BC/AB) = arcsin(4/10) = ~23.58 deg
B = arccos(BC/AB) = arccos(4/10)= ~66.42 deg
AC = sqrt(AB^2-BC^2) = sqrt(10^2-4^2) = 9.16
5.
A = 90-B=90-20 =70
AB = AC/sinC = 30/sin(20deg) = ~87.71
BC = sqrt(AB^2-AC^2) = sqrt(87.71^2-30^2) = ~82.42
6.
AB = AC/cosA =125/cos(50deg) = ~194.46
B = 90-A = 90-50 =40
BC = sqrt(AB^2-AC^2) = sqrt(194.46^2-125^2) = ~148.96
7.
AB = AC/cosA =8/cos(20deg) = ~8.51
B=90-A =90-20=70
BC = sqrt(AB^2-AC^2) = sqrt(8.51^2-8^2) =~2.90
Isn't the answer obviece 5
The first three you should check off because the man lost less so the last few questions would be wrong
