Trigonometri

1. Persamaan Trigonometri

1.1. Sin x = Sin α x = α + k.360° atau x = (180° - α) + k.360°

1.2. Cos x = Cos α x = α + k.360° atau x = - α + k.360°

1.3. Tan x = Tan α x = α + k.180°

2. Perkalian Trigonometri

2.1. 2 Sin α.Cos β = Sin (α + β) + Sin (α - β)

2.2. 2 Cos α.Sin β = Sin (α + β) - Sin (α + β)

2.3. 2 Cos α.Cos β = Cos (α + β) + Cos (α + β)

2.4. - 2 Sin α.Sin β = Cos (α + β) - Cos (α + β)

3. Turunan Pertama Trigonometri

3.1. Sin x = Cos x

3.2. Cos x = - Sin x

3.3. Tan x = Sec² x

3.4. Cosec x = - Cotan x.Cosec x

3.5. Sec x = Tan x.Sec x

3.6. Cotan x = - Cosec² x

4. Aplikasi Turunan Trigonometri

4.1. Fungsi Naik (Syarat F'(x) > 0)

4.2. Fungsi Turun (Syarat F'(x) < 0)

4.3. PGS : Y-Y1 = m (X-X1)