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In a triangle ABc , if r^2cot(A/2) cot(...

In a triangle ABc , if `r^2cot(A/2) cot(B/2) cot(C/2)=`

A

acute angled

B

obtuse angled

C

right angled

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
In a `Delta ABC, cot.(A)/(2)cot.(B)/(2)cot.(C )/(2)ge 3 sqrt(3)`
So there is no triangle possible with with `cot.(A)/(2)cot.(B)/(2)cot.(C )/(2)=4`.
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