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Complementary Angle Calculator
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Two angles are complementary if the sum of their measures is 90. If angle A is complementary to angle B, then m$\angle$A + m$\angle$B = 90, and each angle is called the complement of the other angle.

Complementary Angle Calculator is used to find the sum of two angles. Both angles should be 90 degrees.

Complementary angle

 

Steps for Complementary Angle

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Step 1 :  

In geometry a complementary angle = $\angle a$ + $\angle b$ = 90 degree.



Step 2 :  

We use this following rule to know $\angle a$ and $\angle b$


$\angle a$ = 90 - $\angle b$.


$\angle b$ = 90 - $\angle a$



Example Problem on Complementary Angle Calculator

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  1. If the angle one is 30, find the angle 2 if the two angles are complementary for each other.


    Step 1 :  

    Let the angle 2 be x


    angle 1 = 30



    Step 2 :  

    If the two angles are complementary for each other


    Then 


    x + 30 = 90


    x = 60



    Answer  :  

    The answer is 60o.



  2. If the angle 1 is 40o. Determine the measure of the complement of angle A.


    Step 1 :  

    Let the angle 2 be x


    angle 1 = 40o



    Step 2 :  

    If the two angles are complementary for each other


    Then 


    x + 40 = 90


    x = 50o



    Answer  :  

    The answer is 50o.



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