Respuesta :

if the angle is x , then

180 - x = 9(90-x)
180-x = 810 - 9x
8x = 630
x = 78.75 degrees
TheLazyNobita

Answer:

78.75

Step-by-step explanation:

Supplement = 180 - x

Complement = 90 - x

Given :

180 - x = 9 (90 - x)

180 - x = 810 - 9x

8x = 630

x = 78.75

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