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Question

An angle is 28o less than its complement, find its measure.

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Solution

We know, two angles are said to be complementary, if the sum of their measures is 90.

Let the angle be x and its complement is 90x


Then, according to the statement,

x=(90x)28


x+x=90o28


2x=62


x=622=31.


Hence, the measure of the angle is x=31

and its complement is 90ox=90o31o=59.


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