`(cot A+tan B)/(cot B+tan A)=cot A tan B`

Prove: (tan A+tan B)/(cot A+cot B)=tan A tan B

(tan A + tan B)/( cot A + cot B)+(1- tan A tan B)/( 1- cot A cot B)=

If 2 tan A + cot A = tan B , then cot A +2 tan (A-B)=

Show that in a Delta ABC (cot B+cot C)/(tan B+tan C)+(cot C+cot A)/(tan C+tan A)+(cot A+cot B)/(tan A+tan B)=1

If A+B+C= (pi)/(2) prove that:m (i) "tan"A tan B +"tan"B tan C +"tan" C tan A =1 (ii) cot A +cot B+ cot C= cot A cot B cot C.

If A+B+C=pi, prove that (tan A)/(tan B tan C)+(tan B)/(tan Atan C)+(tan C)/(tan A tan B)=tan A+tan B+tan C-2cot A-2cot B-2cot C

If A+B+C=pi and tan A=1, tanB =2, then (cot C)/(cot A cot B+cot B cot C+cot C cot A) is equal to

If A+B+C=180^(@) " then " sum(cot A + cot B)/(tan A + tan B)=

frac(tan A + tan B)(cot A + cot B) is equal to