Answer :

Given : the vector


To find : angle between the vector and the x-axis


Formula used : If the vector l + m + n and x-axis then the angle between the


lines ‘θ’ is given by


θ =


Here l = 4 , m = 8 , n = 1


θ = =


θ = =


θ =


The angle between the vector and the x-axis is


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