Quiz 3 KEY

Quiz 3 KEY - Name: TA: Math 10C Quiz 3 Feb 15, 2008 1. Let...

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Name: PID: TA: Sec. No: Sec. Time: Math 10C Quiz 3 Feb 15, 2008 1. Let P = ( 2 , 1 , 0), Q = (1 , 2 , 1), and R = ( 3 , 2 , 1). a. Find the vectors −→ PQ and −→ PR . Solution: −→ PQ = 3 i + j k , −→ PR = i + j + k . b. Compute the cross product −→ PQ × −→ PR . Solution: −→ PQ × −→ PR = 2 i 2 j + 4 k . c. Find the area of the triangle PQR . Solution: The area is equal to 1 2 b −→
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This test prep was uploaded on 04/11/2008 for the course MATH 10C taught by Professor Hohnhold during the Winter '07 term at UCSD.

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