Oblicz długość boku c (twierdzenie cosinusów)
c^2 = 7^2 + 4^2 - 2 * 7 * 4 * cos100*
c^2 = 49 + 16 - 56cos(180* - 80*)
c^2 = 65 - 56 * (-cos80*)
c^2 = 65 + 56 * 0,1736
c^2 = 65 + 9,7216
c^2 = 74,7216
c = 8,6441....... ~ 8,6
zadaNiE w ZałączniKu ;)
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c^2 = 7^2 + 4^2 - 2 * 7 * 4 * cos100*
c^2 = 49 + 16 - 56cos(180* - 80*)
c^2 = 65 - 56 * (-cos80*)
c^2 = 65 + 56 * 0,1736
c^2 = 65 + 9,7216
c^2 = 74,7216
c = 8,6441....... ~ 8,6
zadaNiE w ZałączniKu ;)