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Question Number 13228 by b.e.h.i.8.3.4.1.7@gmail.com last updated on 16/May/17

Commented by b.e.h.i.8.3.4.1.7@gmail.com last updated on 16/May/17

in triangle ABC,show that:  r=(√(r_a .r_b ))+(√(r_b .r_c ))+(√(r_c .r_a )) .

$${in}\:{triangle}\:{ABC},{show}\:{that}: \\ $$$$\boldsymbol{{r}}=\sqrt{\boldsymbol{{r}}_{\boldsymbol{{a}}} .\boldsymbol{{r}}_{\boldsymbol{{b}}} }+\sqrt{\boldsymbol{{r}}_{\boldsymbol{{b}}} .\boldsymbol{{r}}_{\boldsymbol{{c}}} }+\sqrt{\boldsymbol{{r}}_{\boldsymbol{{c}}} .\boldsymbol{{r}}_{\boldsymbol{{a}}} }\:. \\ $$

Commented by Tinkutara last updated on 17/May/17

Can you tell the source of this question?

$$\mathrm{Can}\:\mathrm{you}\:\mathrm{tell}\:\mathrm{the}\:\mathrm{source}\:\mathrm{of}\:\mathrm{this}\:\mathrm{question}? \\ $$

Commented by chux last updated on 17/May/17

 pls sir.... which app did you use   in drawing this

$$\:\mathrm{pls}\:\mathrm{sir}....\:\mathrm{which}\:\mathrm{app}\:\mathrm{did}\:\mathrm{you}\:\mathrm{use}\: \\ $$$$\mathrm{in}\:\mathrm{drawing}\:\mathrm{this} \\ $$

Commented by Tinkutara last updated on 17/May/17

You can use Geogebra Graphing  Calculator.

$$\mathrm{You}\:\mathrm{can}\:\mathrm{use}\:\mathrm{Geogebra}\:\mathrm{Graphing} \\ $$$$\mathrm{Calculator}. \\ $$

Commented by chux last updated on 17/May/17

ok...... thanx

$$\mathrm{ok}......\:\mathrm{thanx} \\ $$

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