Объяснение:
sinB=DC/BC=5/13=0,3846
<B=22,6199
<A=180-<C-<B=180-90-22,6199=
=67,3801
sinA=DC/AC
AC=DC: sin67,3801=
=5:0,92308=5,4167
Ответ : АС=5,4167
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Объяснение:
sinB=DC/BC=5/13=0,3846
<B=22,6199
<A=180-<C-<B=180-90-22,6199=
=67,3801
sinA=DC/AC
AC=DC: sin67,3801=
=5:0,92308=5,4167
Ответ : АС=5,4167