1.

(a-30)°and (2a)° are themeasures of two supplemen-tary angles. find the measureof each angles​

Answer»

Answer:-

40° and 140°

Step-by-step explanation:

a-30° and 2A° are two supplementary angles.

As we KNOW that the sum of two supplementary anges is equal to 180*

THEREFORE, a-30° + 2a° = 180°

a-30 + 2a = 180

3a - 30 = 180

3a = 180 + 30

3a = 210

a = 210 ÷ 3

a = 70

→ 1st angle (a-30) = 70 - 30 = 40°

→ 2nd angle (2a) = 2 x 70 = 140°



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