Douglas M. answered • 05/23/16

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Hi Kelly

The supplement and the angle in this problem must add to 180 degrees.

Since the ratio is 3:5, this means that there is a common multiplier (in this case angle) that when compared between the angle and the supplement of the angle give the ratio of 3:5.

Since that common factor or multiplier can be treated as X, we can set up an expression as 3x + 5x = 180.

This will give you an incremental angle, X. If you then multiply by 3 you obtain the angle and multiplying X by 5 will give you its supplement angle.

Another way to look at it is once you obtain your angle from 3*x, then you could also subtract it from 180 to obtain the supplement.

Douglas M.

tutor

certainly, the ratio is just giving you the values for the coefficients to incorporate into the equation form.
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10/12/20

Enda H.

Do I use this procedure is the ratio is 5:4?10/12/20