1/cot x - 1/cot²x + 2 = 0 tan x - tan²x + 2 = 0 kalika dengan -1 -tan x + tan²x - 2 = 0 tan²x - tan x - 2 = 0 (tan x + 1)(tan x - 2) = 0 tan x + 1 = 0 tan x = -1 tan x = tan 135° x = 135° tan x = tan 225° x = 225° tan x - 2 = 0 tan x = 2 (bukan sudut2 istimewa) hp {135°, 225°}
0 votes Thanks 1
Denikurnia11
ada satu soal lagi ka cek profile sya
Denikurnia11
koreksi sedikit tan 225 itu 1 bukan -1
Verified answer
1/cot = tan1/cot x - 1/cot²x + 2 = 0
tan x - tan²x + 2 = 0
kalika dengan -1
-tan x + tan²x - 2 = 0
tan²x - tan x - 2 = 0
(tan x + 1)(tan x - 2) = 0
tan x + 1 = 0
tan x = -1
tan x = tan 135°
x = 135°
tan x = tan 225°
x = 225°
tan x - 2 = 0
tan x = 2 (bukan sudut2 istimewa)
hp {135°, 225°}