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Triangle XYZ with vertices X(4,-1), Y(8,-2), and Z(1,-8) rotate counterclockwise 180 degrees

User OG Dude
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To rotate the triangle XYZ counterclockwise 180 degrees, is X'(-4,-8), Y'(-8,-8), and Z'(1,1)

My apologies for the confusion in my previous response. There was an error in the calculations. Let's correct it:

To rotate a point counterclockwise 180 degrees using the rotation formula:


\[ x' = x \cos(180^\circ) - y \sin(180^\circ) \]


\[ y' = x \sin(180^\circ) + y \cos(180^\circ) \]

Applying the formula to the vertices X(4,-1), Y(8,-2), and Z(1,-8):


\[ X' = 4 \cos(180^\circ) - (-1) \sin(180^\circ) = -4 + 0 = -4 \]


\[ Y' = 8 \cos(180^\circ) - (-2) \sin(180^\circ) = -8 + 0 = -8 \]


\[ Z' = 1 \cos(180^\circ) - (-8) \sin(180^\circ) = 1 + 0 = 1 \]

Therefore, the corrected rotated triangle has vertices X'(-4,-8), Y'(-8,-8), and Z'(1,1).

User JVene
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