Question

PLEASE ANSWER IT VERY URGENT ​

Answer 1

Answer:

prove that 1+ tan x / 1 - tan x

Answer 2

Answer:

Use the formula of Tan(A+B)

TanA+TanB/1-TanATanB = tanπ/4+tanx/1-tanπ/4tanx

Tanπ/4 = 1

So tan(π/4+x) = 1+tanx/1-tanx