In ∆ABC Prve that (b) partr1.r2 + r2.r3 + r3.r1 = s^2
Sandharbh , 8 Years ago
Grade 11
Trigonometry> In ∆ABC Prve that (b) partr1.r2 + r2.r3 +...
1 Answers
Arun
As we know
r = 
/s
r1 = /s-a
r2 = /s-b
r3= /s-c
Put these value in LHS
We get
Solve thia and you will get s2
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