Competitive Exam Trainer Practice or CET Practice aspires to be a personal subject, preparation and answering technique trainer for students appearing for competitive examinations.
Saturday, January 24, 2015
If 5x - 12y + 10 = 0 and 12y - 5x + 16 = 0 are two tangents to a circle, then the radius of the circle is :
A)1
B)2
C)3
D)4
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