Jika tan x = 2 dan ta y =1/2 maka tan (x-y)

TriGonoMetRi

tan (x - y) = (tan x - tan y)/(1 + tan x tan y)

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tan x = 2
tan y = 1/2

tan (x - y)
= (2 - 1/2)/(1 + 1/2 . 2)
= 3/2 / 2
= 3/4