PreCalculus 2006
| Description: | 5.1/5.3 Sum and Difference Formulas for Cos, Sin, and Tan |
| Category: | Math |
| Created by: | strider87 on 2006-10-31 |
| Stack ID: | 53906 |
| Flap 1 | Flap 2 |
| cos(α + β) = | cosα cosβ - sinα sinβ |
| cos(α - β) = | cosα cosβ + sinα sinβ |
| sin(α + β) = | sinα cosβ + cosα sinβ |
| sin(α - β) = | sinα cosβ - cosα sinβ |
| tan(α + β) = | tanα + tanβ / 1- tanα tanβ |
| tan(α - β) | tanα - tanβ / 1+ tanα tanβ |
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