A-level COMPUTER SCIENCE Paper
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You are advised to spend no longer than 45 minutes on this section. Type your answers to Section A in your Electronic Answer Document. 
You must save this document at regular intervals. 
 
 
Figure 1 shows two vectors a and b and the angle between them, . 
 
Figure 1 
 
 
a = [4, 3] 
b = [4, 0] 
 
 
The magnitude of a vector, represented as an arrow, is the length of the arrow. The magnitude of vector a is 5 because �42+32 = 5 
 
.	What is the magnitude of vector b? 
[1 mark] 
 
 
.	Calculate ...
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A-level COMPUTER SCIENCE Paper•A-level COMPUTER SCIENCE Paper
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You are advised to spend no longer than 45 minutes on this section. Type your answers to Section A in your Electronic Answer Document. 
You must save this document at regular intervals. 
 
 
Figure 1 shows two vectors a and b and the angle between them, . 
 
Figure 1 
 
 
a = [4, 3] 
b = [4, 0] 
 
 
The magnitude of a vector, represented as an arrow, is the length of the arrow. The magnitude of vector a is 5 because �42+32 = 5 
 
.	What is the magnitude of vector b? 
[1 mark] 
 
 
.	Calculate ...