Applying the definition of complementary angles, the measure of angle A = 43°.
What are Complementary Angles?
Complementary angles are angles whose sum is equal to 90 degrees. That is, they add up to 90 degrees.
Since angles A and B are complementary, therefore:
Measure of angle A + measure of angle B = 90°
Plug in the values
3x - 8 = x + 26
Combine like terms
3x - x = 8 + 26
2x = 34
2x/2 = 34/2
x = 17
Measure of angle A = 3x - 8 = 3(17) - 8
Measure of angle A = 43°
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