A.8: Trigonometría — Suma y resta ángulos
- Page ID
- 119348
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- Sine
\ comenzar {alinear*}\ sin (\ alfa\ pm\ beta) &=\ sin (\ alfa)\ cos (\ beta)\ pm\ cos (\ alfa)\ sin (\ beta)\ fin {alinear*}
- Coseno
\ comenzar {alinear*}\ cos (\ alfa\ pm\ beta) &=\ cos (\ alfa)\ cos (\ beta)\ mp\ sin (\ alfa)\ sin (\ beta)\ fin {alinear*}