Question

19) In supplementary angle, if first angle is 20 degree less than the second angle then the larger

angle is equal​

Answer 1

Answer:

first angle is 80° and second angle is 100°

Step-by-step explanation:

let the angles are X and Y

since they are supplementry angle

hence there sum is equal to 180°

= X + Y = 180°

according to question first angle is 20° less than second angle

so, X= Y-20

putting this value,

Y+Y-20 = 180

2Y-20=180

Y = 200/2 , Y= 100°

X= 100° - 20°

X= 80°

Answer 2

Answer:

let the larger number be x and the small be y .

y = x - 20°

Given ,

x - 20° + x = 180°

2x = 180° + 20°

2x = 220°

x = 220° / 100°

x = 100° ans.

Step-by-step explanation:

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