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Given that <1 and <2 are supplementary angles and that m<1=115 degrees , explain how to find the measure of the complement of <2
10 years ago

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Steve
<2 = 180-115 = 65
co(<2) = 90-65 = 25

or, make a general rule for the complement of any angle's supplement:
90-(180-x) = x-90
115-90=25
10 years ago

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