1. 2/3 jika cosecan x = 3/2 maka tan (90-x)? 2. jika tan x = -2/5, 1/2π
Matematika
AWPramesti
Pertanyaan
1. 2/3 jika cosecan x = 3/2 maka tan (90-x)?
2. jika tan x = -2/5, 1/2π<x<π, maka tan (1/2π - x)?
2. jika tan x = -2/5, 1/2π<x<π, maka tan (1/2π - x)?
1 Jawaban
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1. Jawaban bapakdr
1) cosec x = 3/2
sisi miring 3
sisi depan 2
sisi samping √5
tan (90-x) = cot x = samping/depan = √5/2
2) tan x = -2/5 (kuadran 2)
tan (½π - x) = tan (90-x) = cot x = 1/tan x
= 1 / (-2/5)
= -5/2