sin x+cos x=(1)/(5)" the "tan2x

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If sin x+cos x=(1)/(5), then tan 2x is

if sin x+cos x=(1)/(5), then find the value of tan2x.

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If (sin x + cos x)/(sin x - cos x) = (6)/(5) , then the value of (tan^(2) x + 1)/(tan^(2) x-1) is :

(1+sin x+cos x+sin2x+cos2x)/(tan2x)=0

tan ^ (- 1) ((cos x-sin x) / (cos x + sin x)) = tan ^ (- 1) ((1-tan x) / (1 + tan x))

(1 + sin x-cos x) / (1 + sin x + cos x) = tan ((x) / (2))