Questions
Which of the following is a unit vector?
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a
i^+j^
b
cosθi^-sinθj^
c
sinθi^+2cosθj^
d
13(i^+j^)
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Correct option is B
Unit vector has a magnitude equal to 1.Here, cos2θ+sin2θ=1∴ Option (b) is the correct answer.Similar Questions
A unit vector is represented by ,then the value of c is
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