Question

В треугольнике MNK ∠M=83° , ∠N=17° , MK = 45 . Чему равна сторона NK ?

Answer 1

∠M=83° , ∠N=17° , MK = 45

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теорема синусов

MN/sin K = MK/sin N = NK/sin M

MK/sin N = NK/sin M

45/sin 17° = NK/sin 83°

NK = 45*sin 83°/sin 17°