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Verified answer
Bab TrigonometriMatematika SMA Kelas X
tan² x - 2 tan x - 8 = 0
(tan x - 4) (tan x + 2) = 0
tan x = 4
x = 75,96°
tan x = -2
x = -63,43°
x = 180° + (-63,43°)
x = 116,57°
HP = { 75,96° , 116,57° }