What is an equation for the cosine graph shown below? +10 -9 8 -135 -90 Oy 8 cos(0-135") +4 Oy 4 coe(6-135") +12 Oy=4cos(8-90") +8 Oy 4 cos[2(0-135)] +8 -6 +5 4 -3 -2 -1 0 A h 9° 180 45 90 135 225

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