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

(tan x)/(1-cot x)-(cot x)/(1-tan x)=(sec x cos(x+1))

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

Prove that (tan phi)/(1-cot phi)+(cot phi)/(1-tan phi)=1+tan phi+cot phi

Prove the following identities : (cot A)/(1 - tan A) + (tan A)/(1- cot A) = 1 + tan A + cot A

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

Prove that (tan theta)/(1-cot theta)+(cot theta)/(1-tan theta)=1+sec theta+tan theta

prove that: (tan theta)/(1-cot theta)+(cot theta)/(1-tan theta)=1+sec theta cosec theta

Prove that (tan theta)/(1-cot theta)+(cot theta)/(1-tan theta) = (sec theta cosec theta +1)

(tan theta)/(1-cot theta)+(cot theta)/(1-tan theta)=1+sec theta*cos ec theta

(tan theta)/(1-cot theta)+(cot theta)/(1-tan theta)=1+sec theta cosec theta