Respuesta :

apologiabiology
complement adds to 90
complement of A is 90-A


supplement is adds to 180
supplemetn of A is 180-A

2(90-A) is -40+180-A

2(90-A)=-40+180-A
2(90-A)=140-A
distribute
180-2A=140-A
add 2A to both sides
180=140+A
minus 140 both sides
40=A

A=40 degres

The measure of angle A is 40 degrees.

What is an Angle?

An angle is made when two rays have a common point, called as the arms of the angle and the common point where the rays meet is called the vertex of the angle.

Let the measure of ∠ A is represented by A.

Twice the complement of angles A is 40

The complement to angle A = 90-A

The supplement of A is 180-A

2 (90-A) = 180-A -40

180 -2A = 140 -A

40 = A

A = 40

To know more about Angle

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