Using the definition of the scalar product, find the angle between the following vectors. (Find the smallest nonnegative angle.) (a)     A = 2î − 9ĵ  and  B = 5î − 6ĵ  °(b)     A = −3î + 3ĵ  and  B = 3î − 4ĵ + 2  °(c)     A = î −2ĵ + 2  and  B = 3ĵ + 4  °

Principles of Physics: A Calculus-Based Text
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Chapter6: Energy Of A System
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Problem 12P
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Using the definition of the scalar product, find the angle between the following vectors. (Find the smallest nonnegative angle.)

(a)    
A = 2î − 9ĵ
 and 
B = 5î − 6ĵ

 °

(b)    
A = −3î + 3ĵ
 and 
B = 3î − 4ĵ + 2

 °

(c)    
A = î −2ĵ + 2
 and 
B = 3ĵ + 4

 °
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