Vectors Are Used in Computer Graphics to Calculate the Length

question 49

Multiple Choice

Vectors are used in computer graphics to calculate the length of shadows over flat surfaces. An object represented by a vector a is held over a flat surface inclined at an angle , as shown in the figure. If a light is shining directly downward, approximate the length of the shadow to two decimal places for the specified values of the vector .

• A)19.60
• B)19.90
• C)19.30
• D)0
• E)19.84

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