Question 218270
Find the measure of the reference angle for 400 degrees


The angle should be less than 360 degrees since a full circle is 360 degrees.

So 400-360=60 degrees.


Another example let's say we have an angle of 145 degrees, then its reference angle is 180-145=45 degrees.  So reference angles need to be less than 90 degrees.


Another example let's say we have an angle of 215 degrees. Then its reference angle is 215-180=45 degrees.


I hope the above steps were helpful.


For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.


And good luck in your studies!


Respectfully,
Dr J

http://www.FreedomUniversity.TV