Question

If 21 and 22 are complementary, what are the measures of the angles when m21 = (4x - 7) and m42 = (x + 12)®? 1. A. 31° and 69 B. 141° and 39° 0.61 and 29° D.1339 and 47

Answer 1

we know that

If two angles are complementary, then their sum is equal to 90 degrees

so

m21+m22=90

substitute the given values

(4x-7)+x+12=90

solve for x

5x+