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A.14 Material de secundaria que deberías poder derivar

  • Page ID
    118209
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    • Gráficas de\(\csc\theta, \sec \theta\) y\(\cot \theta\text{:}\)
    \ [
    \ csc\ theta
    \ nonumber\]
    \ [
    \ seg\ theta
    \ nonumber\]
    \ [
    \ cuna\ theta
    \ nonumber\]
    • Más Pitágoras

      \ begin {align*}\ sin^2\ theta +\ cos^2\ theta &=1 &\ xmapsto {\ text {divide por $\ cos^2\ theta$}} &&\ tan^2\ theta + 1 &=\ seg^2\ theta\\ sin^2\ theta +\ cos^2\ theta &=1 &\ xmapsto {\ text dividir por $\ sin^2\ theta$}} && 1 +\ cot^2\ theta &=\ csc^2\ theta\ end {align*}

    • Seno — ángulo doble (establecido\(\beta =\alpha\) en fórmula de adición de ángulo sinusoidal)

      \ begin {align*}\ sin (2\ alpha) &= 2\ sin (\ alpha)\ cos (\ alpha)\ end {align*}

    • Coseno — ángulo doble (establecido\(\beta =\alpha\) en fórmula de adición de ángulo coseno)

      \ begin {align*}\ cos (2\ alpha) &=\ cos^2 (\ alpha) -\ sin^2 (\ alpha)\\ &= 2\ cos^2 (\ alpha) - 1 &\ text {(usa $\ sin^2 (\ alpha) = 1-\ cos^2 (\ alpha) $)}\\ &= 1 - 2\ sin^2 (\ alpha) &\ text {(usa $\ cos^2 (\ alpha) = 1-\ sen ^2 (\ alpha) $)}\ end {align*}

    • Composición de las funciones trigonométricas y trigonométricas inversas:

      \ begin {alinear*}\ cos (\ arcsin x) &=\ sqrt {1-x^2} &\ seg (\ arctan x) &=\ sqrt {1+x^2}\ end {align*}

      y expresiones similares.

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