Respuesta :

swaggernaut
Let the angle be x
supplementary = 180 - x 
complementary = 90 - x 

As per the given data:
4(90 - x) = 180 - x 
360 - 4x = 180 - x 
360 - 180 - 4x = -x 
180 - 4x = - x 
180 = 4x - x 
180 = 3x 
180/3 = x 
 x = 60 
TheLazyNobita

Answer:

72⁰

Step-by-step explanation:

Angle = x

Complement = 90 - x

Given :

x = 4 (90 - x)

x = 360 - 4x

5x = 360

x = 72⁰

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