Question

What is the measure of angle C?

A 28°

B 62°

C 90°

D. 10°

Answer 1

90 the best way to get the answer

Answer 2

For this case we have that by definition, the sum of the internal angles of a triangle is 180 degrees. So, we have:

`(5x + 12) + (6x + 30) + (2x + 8) = 180\\5x + 12 + 6x + 30 + 2x + 8 = 180`

We add similar terms:

`13x + 50 = 180\\13x = 180-50\\13x = 130\\x = \frac {130} {13}\\x = 10`

Answer:

`x = 10`

Option D