If sin (A+B)= cos (A-B) = 1, then

If sin(A+B)=1 and cos(A-B)=1, 0^@ < A+Blt=90^@ , AgeqB find A and B .

If sin(A-B)=1/2,cos(A+B)=1/2, 0^@lt(A+B)le90^@ , AgtB , find A and B.

If sin(A-B) = 1/2 and cos(A+B) = 1/2 , 0^o B, then find A and B.

In a triangle ABC, if sin A sin(B-C)=sinC sin(A-B) , then prove that cos 2A,cos2B and cos 2C are in AP.

Statement:1 If cos(A+B)sin( C +D) = cos(A-B) sin(C-D) , then the values of cotAcotBcotC is cotD. And Statement:2: If cos(A+B) sin(C+D)= cos(A-B) sin(C-D) then the value of tanAtanBtanC is tanD.

If sin(A-B)=1/2,""""cos(A+B)=1/2, 0o B , find A and B.

In a triangle ABC , if cos A cos B + sin A sin B sin C = 1 , then a:b:c is equal to

If 2 cos(A + B) = 2 sin(A - B) = 1 , find the values of A and B.

sin (ax +b) cos (ax+b)

If 2cos(A+B)=2sin(A-B)=1 , find the values of A and B.