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The graphs of y = 4 cos- a and y - 10 -11 sin a intersect at points A and B as shown below. D

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The graphs of y = 4 cos- a and y - 10 -11 sin a intersect at points A and B as shown below. D 5 y = 10 -11sinx B y = 4caszx 45 135 180 8. The x-coordinate of points A and B are solutions to the equation 0 4cos2 x + 11sin x - 10 =0 0 4cos2 x - 11 sin x + 10 =0 0 10 - 11 sin z = 0 0 4cos z = 0

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