A 1000 candela light source emits a beam of light. The source is held exactly 4 ft

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A 1000 candela light source emits a beam of light. The source is held exactly 4 ft above a moveable surface. The surface can be sloped at angles in 10° intervals in the range of 0° to 90°, measured from horizontal. Determine the luminous intensity, in foot-candles, on the surface at each angle.

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