Math 3 Quiz
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ALGEBRA & FUNCTIONS
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Point RR on the unit circle has coordinates (cos⁡7π4,sin⁡7π4)\left(\cos\frac{7\pi}{4}, \sin\frac{7\pi}{4}\right). If point SS is obtained by rotating point RR counterclockwise by π4\frac{\pi}{4} radians about the origin, what are the coordinates of point SS?
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