Question

the two angles measuring (30 + 2 a)degree and (125 -a) degree supplementary to each other, then find the value of a.​

Answer 1

The value of a is 25

Explanation:

When two angles are supplementary, they add up to 180 degrees

Mathematically,

(30 + 2a) + (125-a) = 180

30 + 2a + 125 - a = 180

a + 155 = 180

a = 180-155

a = 25 degrees