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**jacks****Member**- Registered: 2012-11-21
- Posts: 132

If the Sides

and Opposites angles of are varing such a way that Circum-Radius Remain Constant.Then the value of

options:

(1) 0 (2) a+b+c (c) a sin(A)+b sin(B) +c sin(C) (d) None of these

Where da,db;bc are derivates of a,b and c

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,835

hi jacks

Where da,db;bc are derivates of a,b and c

'da' is only part of the correct calculus notation here. What are you differentiating with respect to?

The following may help. R is the radius of the circumcircle.

Sine rule.

so, for example:

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**jacks****Member**- Registered: 2012-11-21
- Posts: 132

Thanks Bobbundy Got it

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