If `A+B+C=pi` then prove that `sin(A/2)+sin(B/2)+sin(C/2)-1=4sin((pi-A)/4)sin((pi-B)/4)sin((pi-C)/4)`

If A + B + C = pi , prove that sin(A/2)+sin(B/2)+sin(C/2)=1+4sin((pi-A)/4)sin((pi-B)/4)sin((pi-C)/4)

If A+B+C=180^@ then prove that sin( A/2)+sin( B/2)+sin( C/2) = 1+4 sin( (pi-A)/4)sin((pi-B)/4)sin ((pi-C)/4)

In DeltaABC, prove that: a) sin(A/2)+sin(B/2) +sin(C/2)= 1+4sin((pi-A)/4)sin((pi-B)/4).sin((pi-C)/4)

If A+B+C=180^(@) then prove that sin"A/2+"sin"B/2+"sin"C/2 =1+4sin((pi-A)/4)sin((pi-B)/4)cos((pi-C)/4)

In DeltaABC , prove that: sinA/2+sinB/2+sinC/2=1+4sin(pi-A)/(4)sin(pi-B)/(4)sin(pi-C)/(4)

If A+B+C=pi, prove that sin((A)/(2))+sin((B)/(2))+sin((C)/(2))=1+4sin((pi-B)/(4))sin((pi-B)/(4))*sin((pi-C)/(4))

If A, B, C are the angles in a triangle then prove that sin .(A)/(2)+ sin . (B)/(2)+ sin .(C)/(2) =1 +4 sin((pi-A)/(4)) sin ((pi-B)/(4)) sin((pi-C)/(4))