Question

If the angles (2a + 4)° and (3a – 4)° are the complementary angles, find the value of a

Answer 1

Step-by-step explanation:

Let the two angles be 4x and 5x

The sum of two complementary angles is 90∘

∴4x+5x=90∘

⇒9x=90∘

⇒x=990∘=10∘

So the angles are 4×10∘=40∘ and 5×10∘=50∘