Question

If a pair of complementary angles are in the ratio of 3:7, then find the bigger angle.

Answer 1

3x + 7x = 90 (sum of 2 complementary angles is always 90)
10x =90
x = 10
3x = 30
7x = 70
Hence, the greater angle is of the measure 70.

Answer 2

3x + 7x = 10x
10 x = 90
x = 9
so bigger angle 7x = 7 x 9 = 63