Question

1+tan(a)/1-tan(a) please tell me the value

Answer 1

(1+tan A)/(1-tanA)
= (1+sin A/cos A)/(1- sinA/cosA)
= [ ( cos A + sin A )/cos A]/ [( cos A - sinA)/cosA]
= ( cos A + sin A ) / ( cos A - sin A )