Question 1204057
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O is the centre of the circle |AO|=r and |OM|=a. Obtain the expression in a and r for |AB|
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Who is "B" in this problem ? ? ?


The necessary description absents in this post.



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Hello, after this my response, I obtained an empty comment from a visitor,
expressing dissatisfaction.


I understand that everybody can make a mistake.


But posting your dissatisfaction, when you are pointed to your error, 
is just out of the normal behavior of a civilized/educated human.



For your information and for your education: a normal person
should express his (or her) "THANKS", when somebody points out his (or her) mistake.



Usually, humans learn this basic behavior rule at the age 3 - 5 - 7 - 9 years
from parents, relatives or from school.



To learn it in the older age is just too late.


But it is better to learn it later, than never.