Задача 75260 2 задание пж...

652421cdcd0d420401b72b23

1/9/2024 3:32:56 AM

2 задание пж

5f3ea7e3faf909182968ddd9

1/9/2024 6:26:05 AM

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[m]\frac{AC}{sin ∠ABC}=\frac{BC}{sin ∠BAC }[/m]

sin30 ° =[m]\frac{1}{2}[/m]



[m]\frac{2}{\frac{1}{2}}=\frac{2\sqrt{3}}{sin ∠BAC }[/m] ⇒ [m]2sin ∠BAC =\frac{1}{2}\cdot 2\sqrt{3}[/m]

[m]sin∠BAC=\frac{\sqrt{3}}{2}[/m]

∠BAC=60 °