0.03125
32
0.0052
22.5
The sum of the interior angles of a polygon with n sides is 180(n-2). Setting this equal to 5400 yields 180n - 360 = 5400 or 180 n = 5400 + 360 = 5760 or n = 5760/180 = 32 sides.
18
18
180
6
90
60,60,60 Because 180 divided by 3 is 60 60x3= 180
180 ÷ 40 = 4.5 Or 4 remainder 20
The value of sec 180 degrees is equal to 1 divided by the cosine of 180 degrees. Since the cosine of 180 degrees is -1, sec 180 equals -1. Therefore, sec 180° = -1.