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" 23.Show that "(r(1))/(bc)+(r(2))/(ca)+...

" 23.Show that "(r_(1))/(bc)+(r_(2))/(ca)+(13)/(ab)=(1)/(r)-(1)/(2R)

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Show that (r_(1))/(bc)+(r_(2))/(ca)+(r_(3))/(ba)=(1)/(r)-(1)/(2R)

In DeltaABC" prove that " (r_(1))/(bc)+(r_(2))/(ca)+(r_(3))/(ab)=(1)/(r)-(1)/(2R)

In /_\ABC prove that (r_1)/(bc) + (r_2)/(ca) + (r_3)/(ab) = 1/r - 1/(2R) .

Show that r_(1)+r_(2)+r_(3)-r=4R

Show that ((1)/(r _(1))+ (1)/(r_(2)))((1)/(r_(2))+(1)/(r _(3)))((1)/(r _(3))+(1)/(r_(1)))=(64 R^(3))/(a ^(2)b^(2) c^(2))

Show that ((1)/(r _(1))+ (1)/(r_(2)))((1)/(r_(2))+(1)/(r _(3)))((1)/(r _(3))+(1)/(r_(1)))=(64 R^(3))/(a ^(2)b^(2) c^(2))

Show that ((1)/(r _(1))+ (1)/(r_(2)))((1)/(r_(2))+(1)/(r _(3)))((1)/(r _(3))+(1)/(r_(1)))=(64 R^(3))/(a ^(2)b^(2) c^(2))

Show that (r_(1)+ r _(2))(r _(2)+ r _(3)) (r_(3)+r_(1))=4Rs^(2)