78
The complement of an acute angle A is the angle 90° - A. The complement of 13° is 77°.
116 degrees
The angle opposite side RT = 12 will have the smallest measure
180 degrees( 12-2)=1800degrees This is the sum of the interior angles. So divide 1800 by 12 and have the measure of each angle.
The regular polygon whose exterior angle measure is 12 degrees, has 30 sides (360/12, since the exterior angles on any polygon always add up to 360 degrees).
90-78 = 12 degrees
Providing that it is a regular polygon then each exterior angle will measure 12 degrees
0 degrees
Find the angle whose tangent is 500/2350, about 12 degrees
Exterior angle: 360/12 = 30 degrees Interior angle: 180-30 = 150 degrees
The smallest internal angle possible for a regular polygon is 60 degrees. So either the angle is not 12 degrees or it is not an internal angle.
For the 12-sided polygon, each exterior angle is 30 degrees (360/12).