QUESTION IMAGE
Question
what is the image of the point (2, -5) after a rotation of 90° counterclockwise about the origin? answer
Step1: Usar fórmula de rotación
Para una rotación de 90° en sentido anti - reloj alrededor del origen, la fórmula para transformar un punto $(x,y)$ a $(x',y')$ es $x'=-y$ y $y' = x$.
Step2: Sustituir valores
Dado el punto $(x = 2,y=-5)$, entonces $x'=-(-5)=5$ y $y'=2$.
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$(5,2)$