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

If tan A -tan B = x and cot B - cot A = 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

If tan A-tan B=xand 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 .

tan A-tan B=x and cot A-cot B=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 tan A - tan B = x and cot B - cot A= y, then cot (A-B) is

If tan A+tan B=a and cot A+cot B=b , prove that: cot(A+B)=1/a-1/b

If tan A - tan B = x and cot B - cot A =y , then what is cot ( A -B) equal to ?.............. A) 1/x +ya B) (1)/(xy) C) (1)/(x) -(1)/(y) D) (1)/(x) +1/y