Respuesta :
Answer:
The measure of a supplementary angle is the difference between 180° and the given angle. Therefore, the measure of the supplementary angle of 39.3° is:
180°−39.3°=140.7°
Answer:
140.7°
Step-by-step explanation:
supplementary angles, sum to 180°
let x be the supplementary angle, then
x + 39.3° = 180° ( subtract 39.3° from both sides )
x = 140.7°
