Question 1166587
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<pre>

Let x be the angle measure, in degrees;

then the measure of its complement is 90-x degrees.


According the condition,


    x = 2*(90-x).


Simplify and solve to find x


    x = 180 - 2x,

    x + 2x = 180

    3x     = 180

     x     = 180/3 = 60 degrees.


<U>ANSWER</U>.  The angle is 60 degrees.  The complementary angle is 90-60 = 30 degrees.
</pre>

Solved.


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To learn about complementary/supplementary angles, &nbsp;read the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Angles/Angles-basics.lesson>Angles basics</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/How-to-solve-problems-on-suppl-compl-or-vertical-angles-Examples.lesson>HOW TO solve problems on supplementary, complementary or vertical angles - Examples</A>

in this site.