If `tanA-tanB=x and cotA-cotB=y,` prove that `cot(A-B)=1/x-1/y.`

If tanA-tanB=x a n dcotB-cotA=y , prove that cot(A-B)=1/x+1/y

tan A-tan B=x and cot A-cot B=y prove that cot(A-B)=(1)/(x)-(1)/(y)

If tanA-tan B=x and cot B- cot A=y . Prove that cot(A-B)=1/x + 1/y

(i) If tanA-tan B=x and cot B- cot A=y . Prove that cot(A-B)=1/x + 1/y . (ii) If 2 cos A = x+1/x, 2 cos B = y + 1/y , then show that 2 cos (A-B)= x/y+y/x .

(i) If tanA-tan B=x and cot B- cot A=y . Prove that cot(A-B)=1/x + 1/y . (ii) If 2 cos A = x+1/x, 2 cos B = y + 1/y , then show that 2 cos (A-B)= x/y+y/x .

If tan A -tan B = x and cot B - cot A = y, prove that cot(A-B)=1/x+1/y

If tanA+tanB=a and cotA+cotB=b prove that cotA cotB= b/a

If tanA+tanB=a and cotA+cotB=b.Prove that cot(A+B)=1/a-1/b

If tanA+tanB=a and cotA+cotB=b.Prove that cot(A+B)= (1/a)-(1/b)

If tan A-tan B=x,cot B-cot A=y prove that cot(A-B)=(1)/(x)+(1)/(y)