Question

Question #8ba34

Answer 1

60

Explanation:

Solve for x:
(71+x) + (x+81) + 50 = 180 (angles in a triangle add up to 180)
2x + 202 = 180
2x = 180 -202
2x = -22
x = -11
Angle A = 71 + (-11)
Angle A = 60

Answer 2

Set the sum of the angles equal to `180^@`
Solve for the value x.
Use the value of x solve for the value of A.

Explanation:

Set the sum of the angles equal to `180^@`

`50^@ + 71^@+x + x + 81^@ = 180^@`

Solve for the value x

`2x + 202^@ = 180^@`

`2x = -22^@`

`x = -11^@`

Use the value of x solve for the value of A.

`A = 71^@+x`

`A = 71^@-11^@`

`A = 60^@`