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Trigonometry 9 Online
OpenStudy (anonymous):

whats y=tan(x-pi) ?

OpenStudy (anonymous):

srry i would help but i haven't learned tht yet cuz im in algebra I

OpenStudy (anonymous):

n welcome to openstudy

OpenStudy (anonymous):

aa well thanks ^^

Directrix (directrix):

You need to know the tangent of the difference of two angles identity. Attached

Directrix (directrix):

tan ( x + π ) = [ tan x + tan π ] / [ 1 - tan x tan π ] tan ( x + π ) = [ tan x ] / [ 1 ] = tan x ----------- Note: tan π = 0 @grifinity This solution is your "Welcome to Open Study" gift from @misty

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