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TRIGONOMETRI

Trigonometri

A. Jumlah dan Selisih Sudut

1. sin α + β = sin α cos β + cos α sin β

2. sin α - β = sin α cos β - cos α sin β

3. cos α + β = cos α cos β + sin α sin β

4. cos α - β = cos α cos β - sin α sin β

5. tan α + β = tan α + tan β 1 - tan α . tan β

6. tan α + β = tan α - tan β 1 + tan α . tan β

B. Identitas

1. sin 2 α + cos 2 α = 1

2. 1 + tan 2 α = sec 2 α

3. 1 + cotan 2 α = cosec 2 α

4. cosec α = 1 sin α

5. sec α = 1 cos α

6. cotan α = 1 tan α

7. tan α = sin α cos α

TRIGONOMETRI TRIGONOMETRI Reviewed by Rahman on 5:41 PM Rating: 5

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