If `cos(alpha + beta)sin(gamma + delta) = cos(alpha - beta) sin(gamma - delta)` then:

If cos (alpha+beta) sin (gamma+delta)=cos (alpha-beta) sin (gamma-delta) , prove that : cot alpha cot beta cot gamma= cot delta .

If cos(alpha+beta)sin(gamma+delta)=cos(alpha-beta)*sin(gamma-delta) ,prove that :cot alpha*cot beta*cot alpha=cot delta

If cos(alpha+beta)sin(gamma+delta)="cos"(alpha-beta)"sin"(gamma-delta) , prove that cotalphacotbetacotgamma=cotdelta

If cos(alpha+beta)*sin(gamma+delta)=cos(alpha-beta)*sin(gamma-delta), prove that cotalphacotbetacotgamma=cotdelta

If cos(alpha+beta)sin(gamma+delta)=cos(alpha-beta)sin(gamma-delta), prove that cot alpha cot beta cot gamma=cot delta

If cos(alpha+beta)*sin(gamma+delta)=cos(alpha-beta)*sin(gamma-delta) prove that cot alpha cot beta cot gamma=cot delta

If x = sin (alpha - beta) sin (gamma - delta) y = sin (beta - gamma) sin (alpha - delta ) and z = sin (gamma - alpha ) sin (beta - delta ) then

Assetion (A) : If x= sin(alpha- beta) sin (gamma- delta), y= sin(beta- gamma) sin (alpha- delta) z=sin (gamma- alpha). Sin (beta- delta) then x+y+z=0 Reason (R) : 2 sin A sin B= cos (A-B)+cos (A+B)

cos (alpha + beta) cos gamma-cos (beta + gamma) cos alpha = sin beta sin (gamma-alpha)