Question

What is the measure of the angle which is smaller than 70o

10' 20" by

12o

30' 50''
​

Answer 1

Answer:

Sum of two complementary angles is 90°

∴ (y − 20)° + (y + 30)° = 90°

⇒ y − 20 + y + 30 = 90

⇒ 2y + 10 = 90

⇒ 2y = 80

⇒ y = 40

Hence, the measure of the two angles are 20° and 70°.