del grafico:
tga= sec40⁰ - sec20⁰
4 sen 20⁰
tga= cos20 - cos40⁰
4sen20⁰ cos20⁰ cos40⁰
tg alfa= sen10⁰ = tg10⁰
cos10⁰
respuesta: alfa = 10 ⁰ la a
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Verified answer
del grafico:
tga= sec40⁰ - sec20⁰
4 sen 20⁰
tga= cos20 - cos40⁰
4sen20⁰ cos20⁰ cos40⁰
tg alfa= sen10⁰ = tg10⁰
cos10⁰
respuesta: alfa = 10 ⁰ la a