Prove the identity. show all work. tan(x-pi/4)=tanx-1/tanx+1

asked Jan 10, 2017 21.4k views

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

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

Mils answered Jan 17, 2017

by Mils

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