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" 7."tan((pi)/(4)+(x)/(2))=tan x+sec x...

" 7."tan((pi)/(4)+(x)/(2))=tan x+sec x

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Provet that "tan "((pi)/(4)+(x)/(2)) = " tan x + sec x "

Provet that " tan " ((pi)/(4) +(x)/(2)) + " tan " ((pi)/(4)-(x)/(2)) = " 2 sec x"

tan((pi)/(4)+(x)/(2))+tan((pi)/(4)-(x)/(2))=2 then the general solution of x=

(tan ((pi)/(4) +x))/( tan ((pi)/(4) -x ))= ((1 + tan x )/( 1- tan x )) ^(2)

(tan ((pi)/(4) +x))/( tan ((pi)/(4) -x ))= ((1 + tan x )/( 1- tan x )) ^(2)

(tan ((pi)/(4) +4))/( tan ((pi)/(4) -x ))= ((1 + tan x )/( 1- tan x )) ^(2)

(tan ((pi)/(4) +4))/( tan ((pi)/(4) -x ))= ((1 + tan x )/( 1- tan x )) ^(2)

" tan " ((pi)/(4) -x) =(1 - tan x)/( 1+ tan x)

(sec2x-tan2x) equals a tan(x-(pi)/(4))b)tan((pi)/(4)-x)c cot(x-(pi)/(4))d tan^(2)(x+(pi)/(4))

Prove that (tan((pi)/(4)+x))/(tan((pi)/(4)-x))=((1+tan x)/(1-tan x))^(2)