Question

11
The two angles measuring (30° - a) and (125° + 2a) are supplementary to each other, then
the value of'a' is:​

Answer 1

Answer:

Value of a = 25°

Step-by-step explanation:

Angle 1 = 30°-a

Angle 2 = 125°+2a

Because both are supplementary angles of each other so the sum of both = 180°

Angle 1 + Angle 2 = 180°

30°-a+125°+2a = 180°

30°+125°+2a-a = 180°

155°+a = 180°

a = 180°-155°

a = 25°

hope it helps.