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What is the value of a?
a-470°
a+250°
a-45°
a =

What is the value of a? a-470° a+250° a-45° a =-example-1
User Inez
by
5.8k points

1 Answer

0 votes

Answer:

a = 117°

Explanation:

The exterior angle of a triangle = the sum of the remote interior angles.

a + 25° = (a - 47°) + (a - 45°)

a + 25° = (a + a) + (-47 - 45)

a + 25° = 2a - 92°

-2a = -2a

-a +25 = -92

-25 = -25

-a = -117°

a = 117°

User Sanjeev Sangral
by
5.6k points