If `A+B+C=pi`

If in A B C ,A=pi/7,B=(2pi)/7,C=(4pi)/7 then a^2+b^2+c^2 must be

If 0<=A,B,C<=pi and A+B+c=pi than the minimum value of sin3A+sin3B+sin3C is

If cosA=cosBcosC and A+B+C=pi , then the value of cotBcotC is

If sin A=5sin(B+C)+2 and A+B+C=pi then A

A + B + C = (pi) / (2) rArr tan A tan B + tan B tan C + tan C tan A =

Let A , B , C be the three angles such that A+B+C=pi . If T a nAtanB=2, then find the value of (cos(A-B))/(cosC)

Let A , B , C be the three angles such that A+B+C=pi . If T a nAtanB=2, then find the value of (cos(A-B))/(cosC)

Let A , B , C be the three angles such that A+B+C=pi . If tanAtanB=2, then find the value of (cos(A-B))/(cosC)

A+B+C=(pi)/(2)rArr cot A+cot B+cot C=