Question

Plz help me, its so urgent ​

Answer 1

Step-by-step explanation:

Since, ∠A and ∠B are supplementary angles. ∴m∠A + m∠B = 180 ∴m∠A + x + 20 = 180 ∴m∠A + x + 20 – 20 = 180 – 20 …. (Subtracting 20 from both sides) ∴m∠A + x = 160 ∴m∠A + x – x = 160 – x ….(Subtracting x from both sides) ∴m∠A = (160 – x)° ∴The measure of ∠A is (160 – x)

Answer 2

Answer:

given

b=(x+20)°

we know in supplementary angels sum of two angles is equal to 180°

therefore . a+b=180°

a+(x+20)° =180°

a=180 -(x+20)°

a=180-x-20

a=160-x