1) Tan 2X = 3 tan X
Matematika
DianHende
Pertanyaan
1) Tan 2X = 3 tan X
1 Jawaban
-
1. Jawaban kaksyaif
tan2x = 3.tanx
2tanx/(1-tan^2 x) = 3.tan x
2/(1-tan^2 x) = 3
(1-tan^2 x) = 2/3
1- 2/3 = tan^2 x
1/3 = tan^2 x
tan x = +/- 1/3 akar 3
x = 30°, 150°, 330°