" 7.If "rr_(2)=r_(1)r_(3)" then "sin B

If rr_(2)=r_(1)r_(3) then find B.

In triangle ABC, if rr_(1)=r_(2)r_(3), then the triangle is

In triangle ABC, 2b=a+c .If r_(1),r_(2),r_(3) be the exradii of the triangle,then (1)/(r_(1)),(1)/(r_(2)) and (1)/(r_(3)) are in

In triangleABC , If r_(1), r_(2), r_(3) are exradii opposites to angles A,B and C respectively. Then (1/r_(1) +1/r_(2)) (1/r_(2)+1/r_(3)) (1/r_(3)+1/r_(1)) is equal to

In triangleABC , If r_(1), r_(2), r_(3) are exradii opposites to angles A,B and C respectively. Then (1/r_(1) +1/r_(2)) (1/r_(2)+1/r_(3)) (1/r_(3)+1/r_(1)) is equal to

In a triangle ABC, a=3,b=4, c=5, then the value of (rr_(1)r_(2)r_(3))/6 is _____________