Pré-cálculo Exemplos

$\cos (12) \cos (13) - \sin (12) \sin (13)$

Etapa 1

Avalie $\cos (12)$ .

$0.9781476 \cos (13) - \sin (12) \sin (13)$

Etapa 2

Avalie $\cos (13)$ .

$0.9781476 \cdot 0.97437006 - \sin (12) \sin (13)$

Etapa 3

Multiplique $0.9781476$ por $0.97437006$ .

$0.95307774 - \sin (12) \sin (13)$

Etapa 4

Avalie $\sin (12)$ .

$0.95307774 - 1 \cdot 0.20791169 \sin (13)$

Etapa 5

Multiplique $- 1$ por $0.20791169$ .

$0.95307774 - 0.20791169 \sin (13)$

Etapa 6

Avalie $\sin (13)$ .

$0.95307774 - 0.20791169 \cdot 0.22495105$

Etapa 7

Multiplique $- 0.20791169$ por $0.22495105$ .

$0.95307774 - 0.04676995$

Etapa 8

Subtraia $0.04676995$ de $0.95307774$ .

$0.90630778$