



 
Hi Ahmed, Since the line 5x + 12y = 7 only touches the circle it is a tangent to the circle. Suppose the point of tangency has coordinated (a, b). Since (a, b) is on the line
The key to this problem is the fact that the line segment from (1, 1) to (a, b) is perpendicular to the line 5x + 12y = 7. What is the slope of the line segment from (1, 1) to (a, b)? Can you complete the problem? Write back if you need more help,  


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