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Example Question #61 : Algebra I
The vertices of a triangle are given by . The triangle is rotated about the origin by
degrees clockwise. What are the new coordinates?
Possible Answers:
Correct answer:
Explanation:
The coordinates form a triangle in the second quadrant with a side along the y-axis. The rotation about the origin by degrees clockwise results in a triangle in the first quadrant with a side along the x-axis. There are two responses that give triangles along the x-axis:
and
A rotation and a dialation by a factor of is given by
, so the correct answer is
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