i) In `DeltaABC`, if b=17, c=11 and `angleA=60^(@)`, find `tan(B-C)/(2)` ii) In `DeltaABC, angleB=90^(@)`, then prove that: `tanA/2=sqrt((b-c)/(b+c))`

i) In `DeltaABC`, if b=17, c=11 and `angleA=60^(@)`, find `tan(B-C)/(2

1.	i) In `DeltaABC`, if b=17, c=11 and `angleA=60^(@)`, find `tan(B-C)/(2)` ii) In `DeltaABC, angleB=90^(@)`, then prove that: `tanA/2=sqrt((b-c)/(b+c))`
Answer» `(3sqrt(3))/14`