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Rumus dasar Matematika
Identitas dasar
sin2(t) + cos2(t)
= 1 tan2(t) + 1
= sec2(t) 1
+ cot2(t) = csc2(t)
Identitas Ganjil Genap
sin(–t) = –sin(t)
cos(–t) = cos(t)
tan(–t) = –tan(t)
.Rumus Penjumlahan Dua Sudut
sin(α + β) = sin(α)cos(β)
+ cos(α)sin(β)
sin(α – β) = sin(α)cos(β) – cos(α)sin(β)
cos(α + β) = cos(α)cos(β) – sin(α)sin(β)
cos(α – β) = cos(α)cos(β) + sin(α)sin(β)
sin(α – β) = sin(α)cos(β) – cos(α)sin(β)
cos(α + β) = cos(α)cos(β) – sin(α)sin(β)
cos(α – β) = cos(α)cos(β) + sin(α)sin(β)
Rumus dua sudut
sin(2x) = 2sin(x)cos(x)
cos(2x) = cos2(x)
– sin2(x) = 1 – 2sin2(x)
= 2cos2(x) – 1
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