There are two complementary angles, 5 and 6. If m 5 = 39, what equation can you write to solve for m 6?
A. m 6 + 39 = 90
B. m 6 + 39 = 180
C. m 6 = 180 - 39
D. m 6 = 39
The sum of complementary angles is 90 degrees. Since angle 5 is 39 degrees, angle 6 will be equal to 90 - 39.
Therefore, the correct equation to solve for m 6 is:
m 6 + 39 = 90
So, the answer is A. m 6 + 39 = 90.