I need to know how to calculate the length of radius a with only knowing the length of radius b and the value of variable x in the picture below

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- May 13th 2010, 06:40 PMcw86Tangent Circles
I need to know how to calculate the length of radius a with only knowing the length of radius b and the value of variable x in the picture below

Attachment 16837 - May 13th 2010, 07:15 PMbjhoppertangent circles