In a triangle ABC, we have `acosB+bcosC+ccosA=(a+b+c)/2` where A, B, C are internal angles and a, b,c are length of sides opposite to them respectively.Then must be

In a triangle ABC , acosB + b cosC + c cosA =(a+b+c)/2 then

In a triangle ABC , acosB + b cosC + c cosA =(a+b+c)/2 then

For any triangle ABC, prove that a(bcosC-ccosB)=b^2-c^2

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A, B and C respectively, then the value of the expression (a)/(c) sin 2C + (c)/(a) sin 2A is

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A, B and C respectively, then the value of the expressin a/c sin 2C + c/a sin 2A is

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A, B and C respectively, then the value of the expression (a)/(c) sin 2C + (c)/(a) sin 2A is

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A, B and C respectively, then the value of the expression (a)/(c) sin 2C + (c)/(a) sin 2A is

If the angles A,B and C of a triangle are in an arithmetic progression and if a,b and c denote the lengths of the sides opposite to A,B and C respectively, then the value of the expression (a)/(c)sin2C+(c)/(a)sin2A is :

Let ABC is be a fixed triangle and P be veriable point in the plane of triangle ABC. Suppose a,b,c are lengths of sides BC,CA,AB opposite to angles A,B,C, respectively. If a(PA)^(2) +b(PB)^(2)+c(PC)^(2) is minimum, then point P with respect to DeltaABC is