Question

What is the measure of angle C? A 28° B 62° C 90° D. 10°

Answer 1

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

Answer 2

Answer:

90 the best way to get the answer