Question

Persamaan trigonometri
tan x=-1
tolong dikerjanya pake penyelasaian

Answer 1

X=arc tan -1 = -45 derajat = 315 derajat

Answer 2

Tan x = tan a
x = a + k.180
tan x = -1
tan x = tan 135
x = 135 + k.180
jika k = 0 maka x = 135 + 0 = 135
jika k = 1 maka x = 135 + 180 = 315
HP = {135,315}