Question Video: Finding the Measure of an Angle given Its Supplementary Angle’s Measure | Nagwa Question Video: Finding the Measure of an Angle given Its Supplementary Angle’s Measure | Nagwa

# Question Video: Finding the Measure of an Angle given Its Supplementary Angle’s Measure Mathematics

Given that the two angles are supplementary, find the value of 𝑥.

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### Video Transcript

Given that the two angles are supplementary, find the value of 𝑥.

The diagram shows us an angle of 𝑥 and an angle of 89 degrees. Let’s begin by remembering that if we have two angles which we’re told are supplementary, it means that they add up to give us 180 degrees. This means that 𝑥 and 89 must sum to 180 degrees. So we could, therefore, work out the value of 𝑥 by calculating 180 degrees subtract 89 degrees. This would give us our answer that 𝑥 is equal to 91 degrees.

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