SOLUTION: What is the supplementary of angle f, if angle f is 78 degrees?

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Question 158117: What is the supplementary of angle f, if angle f is 78 degrees?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=supplementary angle


Since x and f are supplementary, this means that the two angles add to 180 like this:

x%2Bf=180


x%2B78=180 Plug in f=78


x=180-78 Subtract 78 from both sides.


x=102 Combine like terms on the right side.


So the supplementary of angle f is 102 degrees


Note:

102+78=180
180=180