Two angles are supplementary. The first angle measures 60 degrees. What is the measurement of the second angle?

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Answer 1 · 2018-03-20T13:04:39

See a solution process below:

The definition of Supplementary Angles is:

Two Angles are Supplementary when they add up to 180 degrees.

Let's call the angle we are looking for: #a#

Then we can write this equation and solve for #a#:

#a + 60^o = 180^o#

#a + 60^o - color(red)(60^o) = 180^o - color(red)(60^o)#

#a + 0 = 120^o#

#a = 120^o#

The other angle is 180 degrees