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If Two Sides of a Triangle Are Unequal, Then the Angle Opposite to the Greater Side Is Greater Than Angle Opposite to the Smaller Side

13. Three cir...

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13. Three circles each of radius 'r' unit are drawn inside an equilateral triangle of side 'a' units, such that each circle touch the other two and two sides of the triangle as shown in the figure(p,q,r are the centres of the circles).Then relation between r and a is

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