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Two circles with radii r(1) and r(2), r(...

Two circles with radii `r_(1)` and `r_(2), r_(1)gtr_(2)ge2` touch others externelly. If `alpha` is the angle between direct common tangents then `"sin"(alpha)/2=(r_(1)-r_(2))/(r_(1)+r_(2))`

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`"sin"(alpha)/2=(r_(1)-r_(2))/(r_(1)+r_(2))`
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AAKASH SERIES-CIRCLES-ADDITIONAL SOLVED EXAMPLES
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  10. Consider a family of cirlces which are passing through the point (-1,1...

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  14. If polars of A,B w.r.t to the circle having centre O and radius r inte...

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  15. Each side of DeltaABC is the polar of the opposite vertex with respect...

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  16. Two circles with radii r(1) and r(2), r(1)gtr(2)ge2 touch others exter...

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