Question

An angle is 40 less than one-third of its supplement. Find the angle and its supplement.​. <br /><br />
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Answer 1

Answer:

let's angle is=x

supplement=3x+40

so,

x+3x+40=180

4x+40=180

4x=180-40=140

x=140÷4=35(angle)

3x+40=35×3+40=145(supplement)

or,. 180-35 =145(supplement)

Answer 2

Answer:

Step-by-step explanation:

Supplementary angles add up to 90°

Let one of the angles be X

1/3x+ x+40=90°

1/3X+X= 90-40°=> 50°

4/3x =50°

X= 50×3/4

= 37.5°