Respuesta :

Answer:

72

Step-by-step explanation:

one angle = x

other one, 4x

they're compliment,

so,

x+4x=90

or, 5x=90

or, x=18

so the angle is 4x=4×18=72

mhanifa

Answer:

  • 60°

Step-by-step explanation:

Let the angle is x.

Supplement of x:

  • 180 - x

Complement of x:

  • 90 - x

We have:

  • 180 - x = 4(90 - x)

Solve for x:

  • 180 - x = 360 - 4x
  • 4x - x = 360 - 180
  • 3x = 180
  • x = 60

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