If is an angle in Quadrant III and the corresponding point on the unit circle is

MATHEMATICS · Single correct · AP · AP Precalculus · Trigonometric and Polar Functions · Trigonometric and Polar Functions

Problem

If θθ is an angle in Quadrant III and the corresponding point on the unit circle is (x,y)(x, y), which of the following sign combinations is correct? (a) x>0,  y<0x>0,\; y<0 (b) x<0,  y=0x<0,\; y=0 (c) x<0,  y<0x<0,\; y<0 (d) x<0,  y>0x<0,\; y>0

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