Trong mặt phẳng và hệ trục tọa độ oxy cho phép vị trí tâm I(2;3) tỉ số k=-2 biến điểm M (-7;2) thanh M' có tọa độ

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leoisawesome18

15.07.2022

Mathematics

$\bf \begin{array}{ccllll}
radians&d e grees\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\pi &180\\
\frac{\pi }{3}&d
\end{array}\implies \cfrac{\pi }{\frac{\pi }{3}}=\cfrac{180}{d}\implies \cfrac{\frac{\pi }{1}}{\frac{\pi }{3}}=\cfrac{180}{d}
\\\\\\
\cfrac{\pi }{1}\cdot \cfrac{3}{\pi }=\cfrac{180}{d}\implies 3=\cfrac{180}{d}\implies d=\cfrac{180}{3}$

and pretty sure you know how much that is.

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