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Question

In the angle subtended by vector ˆi+ˆj with the x - axis is 


Your Answer
A
Correct Answer
B
Your Answer
C
Your Answer
D

Solution

The correct option is B
If ¯a=^i+^j;¯b=^i (x-axis)
then the angle between ¯a & ¯b is cos θ=¯a.¯b|¯a| |¯b|=(^i+^j).(^i)12+12×12=12
θ=45o
 

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