Question

find an angle which is 1/3rd its supplement

Answer 1

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1/3 of 180
1/3 ×180°
=60°
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Answer 2

let the two angles be x and 3x.

sum of x and 3x is supplement

→x+3x=180

4x=180

x=180/4

x=25

∴the 1st angle is 25 degrees

and the second angle is 25*3=75 degree.

hope the answer is helpful!!