In triangle ABC if r=1 R=3 s= 5 then area of triangle ABC
Pranit Agrawal , 7 Years ago
Grade 11
Trigonometry> In triangle ABC if r=1 R=3 s= 5 then area...
2 Answers
Arun
Last Activity: 7 Years ago
Dear Pranit
Area of triangle (Delta) = s *r
Area = 5*1 = 5 unit²
Regards
Arun (askiitians forum expert)
Rajesh Kurlepu
Last Activity: 3 Years ago
The question is incorrect since we don't get real values of a,b and c
We know ∆=r×s From this equation we get ∆=5
We also know that 4∆R=abc
From the above equation we get abc=60
On Applying AM-GM inequality for a,b,c we can clearly observe that the inequality doesn't hold good in this case
So no such triangle exists!!
Even if u try solving u will get ab+bc+ca=38
If u solve cubic equation with roots a,b,c then all its roots are not real!!
Therefore the question is incorrect
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